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: 1638 (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 55.64 1642 100% 1642 1
20th_books 69.41 1372 100% 1372 1
wiki_math 199.24 682 100% 682 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 48.10 3018 100% 3018 1
wiki_arts 55.97 2490 100% 2490 1
wiki_society 77.55 1818 100% 1818 1
wiki_linguistics 53.92 2246 100% 2246 1
wiki_physical_science 86.95 1681 100% 1681 1
wiki_history 43.04 3138 100% 3138 1
early_modern_science 267.55 408 100% 408 1
religious_translated 63.81 1601 100% 1601 1
cooking 243.33 568 100% 568 1
legal_scotus 169.55 770 100% 770 1
eu_parliament_debates 42.58 2323 100% 2323 1
openstax_science 40.29 3040 100% 3040 1
openstax_society 46.67 2762 100% 2762 1
wpa_life_histories 45.53 1932 100% 1932 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.