Base Difficulty

Base difficulty: Level 11 edit

Level distribution for adjective (physical_property): 3: 1 8: 2 11: 11 14: 20 17: 9 18: 7 20: 2 27: 3 133: 1 179: 1 249: 1 330: 1 340: 1 355: 38 360: 1 370: 2 379: 1 380: 1 420: 1 1000: 1 1010: 3 1040: 8 1050: 5 1090: 2 1120: 16 1209: 1 1399: 9

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: 823 (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 122.62 835 97% 746 2
20th_books 129.99 811 97% 733 2
wiki_math 100.60 1530 97% 1034 2
wiki_geography 274.83 534 97% 463 2
wiki_biology 390.65 330 97% 302 2
wiki_modern_life 356.28 372 97% 327 2
wiki_arts 263.78 639 97% 493 2
wiki_society 175.10 1073 97% 785 2
wiki_linguistics 158.11 1221 97% 807 2
wiki_physical_science 196.66 704 97% 725 downrated 1
wiki_history 125.89 1436 97% 1057 2
early_modern_science 210.80 559 97% 504 2
religious_translated 90.21 1115 97% 1148 downrated 1
cooking 111.59 1034 97% 1065 downrated 1
legal_scotus 53.43 2399 97% 1936 2
eu_parliament_debates 122.90 1415 97% 885 2
openstax_science 162.50 997 97% 835 2
openstax_society 153.61 1191 97% 889 2
wpa_life_histories 88.98 1108 97% 1141 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.