Base Difficulty

Base difficulty: Level 350 edit

Level distribution for adjective (location): 350: 31 1010: 6 1020: 8 1040: 1 1050: 1 1070: 2 1120: 22 1399: 2

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: 8224 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 6.63 1931 14% 13517 downrated 1
20th_books 6.52 1919 14% 13433 downrated 1
wiki_math 20.62 934 14% 6538 downrated 1
wiki_geography 21.50 888 14% 6216 downrated 1
wiki_biology 43.04 399 14% 2793 downrated 1
wiki_modern_life 18.59 1111 14% 7777 downrated 1
wiki_arts 15.06 1309 14% 9163 downrated 1
wiki_society 7.38 2720 14% 11000 capped 1
wiki_linguistics 11.36 1609 14% 9000 capped 1
wiki_physical_science 23.49 887 14% 6209 downrated 1
wiki_history 8.20 2387 14% 9000 capped 1
early_modern_science 21.64 736 14% 5152 downrated 1
religious_translated 4.53 2838 14% 10400 capped 1
cooking 9.34 1515 14% 5200 capped 1
legal_scotus 2.43 5047 14% 20000 capped 1
eu_parliament_debates 0.00 — — — 0
openstax_science 25.41 802 14% 5614 downrated 1
openstax_society 9.51 2076 14% 11000 capped 1
wpa_life_histories 5.60 2285 14% 15995 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.