Base Difficulty

Base difficulty: Level 318 edit

Level distribution for adjective (quality): 3: 1 11: 10 14: 12 17: 23 18: 3 20: 4 318: 35 320: 28 330: 1 340: 2 360: 2 380: 1 400: 3 420: 4 430: 27 469: 27 470: 2 1040: 2 1060: 2 1070: 13 1090: 3 1110: 2 1120: 47 1214: 1 1399: 16

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: 1158 (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 22.28 3603 100% 3603 1
20th_books 33.23 2524 100% 2524 1
wiki_math 25.34 3109 100% 3109 1
wiki_geography 51.45 2675 100% 2675 1
wiki_biology 57.30 2378 100% 2378 1
wiki_modern_life 352.72 297 100% 297 1
wiki_arts 135.50 991 100% 991 1
wiki_society 33.76 4004 100% 4004 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 511.72 232 100% 232 1
wiki_history 41.90 3214 100% 3214 1
early_modern_science 235.29 460 100% 460 1
religious_translated 0.00 — — — 0
cooking 43.94 1912 100% 1912 1
legal_scotus 19.63 4607 100% 4607 1
eu_parliament_debates 0.00 — — — 0
openstax_science 225.94 615 100% 615 1
openstax_society 32.21 3683 100% 3683 1
wpa_life_histories 60.62 1550 100% 1550 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.