Base Difficulty

Base difficulty: Level 221 edit

Level distribution for noun (concept_idea): 19: 2 20: 3 26: 1 27: 1 221: 29 270: 31 274: 37 275: 31 280: 29 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 7 1120: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 175.01 565 100% 565 1
20th_books 133.76 731 100% 731 1
wiki_math 266.38 503 100% 503 1
wiki_geography 149.17 862 100% 862 1
wiki_biology 153.89 870 100% 870 1
wiki_modern_life 304.56 362 100% 362 1
wiki_arts 184.37 661 100% 661 1
wiki_society 238.62 482 100% 482 1
wiki_linguistics 376.70 322 100% 322 1
wiki_physical_science 0.00 — — — 0
wiki_history 361.87 269 100% 269 1
early_modern_science 276.96 386 100% 386 1
religious_translated 49.62 1919 100% 1919 1
cooking 41.92 1966 100% 1966 1
legal_scotus 331.03 368 100% 368 1
eu_parliament_debates 562.55 226 100% 226 1
openstax_science 271.70 502 100% 502 1
openstax_society 223.76 627 100% 627 1
wpa_life_histories 73.39 1291 100% 1291 1

Best form = the single best-ranked form in the corpus, share-blind — how the spelling itself ranked. Share = how much of that spelling belongs to this lemma, when several senses compete for it. Zipf rank = all the forms combined (variant spellings included), each scaled by its share, and what feeds the combined frequency rank. Combining forms improves on the best form, but a share below 100% pushes the other way and usually wins: a sense holding a small slice of a common spelling is a rare word, so its rank lands downrated below the best form — and once it falls past what the corpus can support it is capped at the rank an unlisted word would get.