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: 738 (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 33.62 2578 100% 2578 1
20th_books 47.32 1858 100% 1858 1
wiki_math 252.21 538 100% 538 1
wiki_geography 82.22 1723 100% 1723 1
wiki_biology 125.35 1127 100% 1127 1
wiki_modern_life 317.88 346 100% 346 1
wiki_arts 137.14 978 100% 978 1
wiki_society 394.24 269 100% 269 1
wiki_linguistics 56.06 2200 100% 2200 1
wiki_physical_science 551.95 202 100% 202 1
wiki_history 120.58 1089 100% 1089 1
early_modern_science 182.92 597 100% 597 1
religious_translated 51.44 1901 100% 1901 1
cooking 0.00 — — — 0
legal_scotus 188.16 684 100% 684 1
eu_parliament_debates 35.25 2611 100% 2611 1
openstax_science 310.26 414 100% 414 1
openstax_society 433.24 267 100% 267 1
wpa_life_histories 18.99 3759 100% 3759 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.