Base Difficulty

Base difficulty: Level 265 edit

Level distribution for noun (mental_construct): 265: 27 300: 1 390: 2 460: 1 1060: 6 1070: 1 1120: 1 1399: 30

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 1855 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A2 (2 of 6) 2100

Rank used = synthetic rank this tier contributes to the combined frequency rank (lower = more common).

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 140.50 399 50% 718 downrated 2
20th_books 94.76 617 50% 1059 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 19.00 3550 50% 7100 downrated 1
wiki_society 20.16 3414 50% 6828 downrated 1
wiki_linguistics 15.05 3458 50% 6916 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 23.44 2906 50% 5812 downrated 1
early_modern_science 171.81 344 50% 627 downrated 2
religious_translated 95.04 748 50% 1110 downrated 2
cooking 13.52 2561 50% 5122 downrated 1
legal_scotus 132.87 527 50% 926 downrated 2
eu_parliament_debates 92.48 809 50% 1221 downrated 2
openstax_science 0.00 — — — 0
openstax_society 13.85 4141 50% 8282 downrated 1
wpa_life_histories 28.35 1683 50% 3366 downrated 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.