How three English spelling lists overlap

Published for direct use; search approval pending. Its mechanically validated result is available, but the page remains noindex and outside sitemaps while human editorial and source-rights review is incomplete.

By The Word Index Updated July 2026

Result

61.97% of the safe normalized-spelling records occur in exactly one of the three pinned spelling artifacts.

Analysis population
394,445
Records found in exactly one spelling artifact
61.97%
Records found in at least two spelling artifacts
38.03%

61.97% of the safe normalized-spelling records occur in exactly one of the three pinned spelling artifacts.

What this comparison establishes

A match establishes presence in an exact, versioned artifact after the declared normalization. It does not establish universal English validity, usage, dictionary consensus, or acceptance in a game.

Records by exact source combination

A bar chart of the same exact counts available in the adjacent source combination table.

Read the accessible data table.

Population and exclusions

The exact population used by this version of the analysis.
Population stage Records (records)
Raw lexical ledger 394595
Excluded by product policy 150
Safe normalized-spelling records 394445
Records meeting this study's inclusion criteria 394445

How often the spelling artifacts agree

Exact source-membership counts after the declared exclusions.
Metric Records (records) Share (percent)
Membership in exactly one spelling artifact 244455 61.97
Membership in at least two spelling artifacts 149990 38.03
Membership in all three spelling artifacts 8090 2.05

Every exact source combination

Presence means membership in the named pinned artifact only.
Exact source combination Number of sources Records (records) Share of analysis population (percent)
dwyl-english-words 1 219992 55.77
enable 1 23852 6.05
google-10000-english 1 611 0.15
dwyl-english-words + enable 2 140717 35.67
dwyl-english-words + google-10000-english 2 1164 0.30
enable + google-10000-english 2 19 0.00
dwyl-english-words + enable + google-10000-english 3 8090 2.05

Methodology

Research question: How much do the pinned dwyl, ENABLE, and Google 10,000 spelling lists overlap in this lexical release?

Why it is useful: The comparison shows why presence in one list is evidence of source membership, not universal English validity.

Included

  • source-overlap.normalized-ascii: Include normalized ASCII spellings retained in at least one of the three pinned orthographic sources.

Excluded

  • source-overlap.product-policy: Exclude spellings matched by the exact first-party content-safety policy before aggregation.

Transformations

  1. source-overlap.membership-signature-v1: Sort exact source IDs and assign each retained spelling to one mutually exclusive membership combination.

Calculations

research.count-v1
Count retained records in a declared group. Formula: count(records).
research.share-v1
Calculate a group's exact share of its declared denominator. Formula: 100 * numerator / denominator.

Limitations

  • The three lists have different purposes, collection methods, and scopes.
  • List membership does not establish common usage, dictionary status, game validity, or suitability for a task.
  • Normalized ASCII comparison does not evaluate senses, inflections, or regional usage.
  • Source redistribution and output reuse rights remain under human review.

Versions, sources, and review

Study ID
study.source-list-overlap
Study version
1.0.0
Lexical data version
2026.07-lexical.3
Lexical build
b5dc0fb56b8de890
Study build
b51b0db0024b6375
Analysis contract
8f01b3cdcec44c1f
Exact result digest
085b91080cd8c207
Factual review
machine validated
Editorial review
pending
Source-rights review
pending
Search eligibility
No — Machine-generated results are published noindex while editorial and source-rights review remain pending.

dwyl-english-words git:8179fe68775df3f553ef19520db065228e65d1d3

source-membership; surface-spelling-as-listed.

Licence: Unlicense notice; upstream dataset rights unresolved. Legal review: pending. Redistribution review: pending.

  • The pinned repository licence is the Unlicense, but the pinned README says copyright in the extracted source list remains with Infochimps. Human legal review of the upstream rights chain is required.
  • Do not assert a redistribution right until the Infochimps-to-dwyl rights chain has been reviewed by a human.
  • Dialect or scope: unspecified

dwyl/english-words; the repository carries an Unlicense notice, while its pinned README attributes upstream copyright to Infochimps

enable artifact-sha256:d3fbe8485022088fcf527edcde2fbdc18b4bbc141ac58123c9adb462e086eaf7

source-membership; surface-spelling-as-listed.

Licence: Licence terms not stated by the source. Legal review: pending. Redistribution review: pending.

  • The downloaded artifact is content-pinned by SHA-256, but it contains no licence notice and the configured source page does not state reuse terms.
  • The artifact is reproducibly pinned but no affirmative reuse grant has been located; redistribution approval remains pending.
  • Dialect or scope: North-American-oriented; exact edition metadata unavailable

ENABLE (Enhanced North American Benchmark Lexicon); exact reuse terms are pending legal review

google-10000-english git:bdf4c221bc120b0b7f6c3f1eff1cc1abb975f8d8

source-membership; source-order.

Licence: No explicit licence grant in pinned repository metadata. Legal review: pending. Redistribution review: pending.

  • The exact pinned LICENSE.md describes provenance but contains no explicit public-domain dedication or licence grant. Human review is required.
  • The pinned repository documents provenance but does not supply an affirmative licence grant; do not describe it as public domain.
  • Dialect or scope: USA no-swears variant

first20hours/google-10000-english, derived from the Google Web Trillion Word Corpus and Peter Norvig's compilation

offensive-term-policy 2026.07-review-pending.2

content_filter; search_results; result_counts.

Licence: Reuse terms not yet approved. Legal review: pending. Redistribution review: pending.

  • This bounded policy list cannot determine whether every usage is offensive or benign.

The Word Index first-party content-safety exclusion policy

Citations

  1. English Words (words_alpha.txt), dwyl, version git:8179fe68775df3f553ef19520db065228e65d1d3 (dataset).
  2. ENABLE Wordlist, ENABLE project, version artifact-sha256:d3fbe8485022088fcf527edcde2fbdc18b4bbc141ac58123c9adb462e086eaf7 (dataset).
  3. 10000 Common Words, first20hours, version git:bdf4c221bc120b0b7f6c3f1eff1cc1abb975f8d8 (dataset).
  4. The Word Index content-safety exclusion policy, The Word Index, version 2026.07-review-pending.2 (policy).

Data and reproducibility

Source-rights review is pending. The available file contains aggregate computed measures, not a redistributed spelling list. Availability does not grant broader reuse rights; consult the source and licence register before reuse.

Download the canonical aggregate CSV

View the canonical JSON study bundle.

Reproduce this version from a clean checkout:

make studies_reproduce STUDY=source-list-overlap