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: 1449 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 36.39 2408 100% 2408 1
20th_books 43.54 1997 100% 1997 1
wiki_math 94.44 1304 100% 1304 1
wiki_geography 0.00 — — — 0
wiki_biology 62.67 2182 100% 2182 1
wiki_modern_life 185.55 722 100% 722 1
wiki_arts 55.97 2491 100% 2491 1
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 422.52 307 100% 307 1
wiki_history 0.00 — — — 0
early_modern_science 247.82 438 100% 438 1
religious_translated 27.27 3190 100% 3190 1
cooking 86.74 1261 100% 1261 1
legal_scotus 17.80 4915 100% 4915 1
eu_parliament_debates 32.70 2760 100% 2760 1
openstax_science 203.93 691 100% 691 1
openstax_society 18.59 5484 100% 5484 1
wpa_life_histories 28.83 2734 100% 2734 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.