Base Difficulty

Base difficulty: Level 1399 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: 630 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 375.60 237 80% 296 downrated 1
20th_books 336.34 271 80% 339 downrated 1
wiki_math 170.44 642 80% 802 downrated 1
wiki_geography 116.19 926 80% 1157 downrated 1
wiki_biology 179.93 578 80% 722 downrated 1
wiki_modern_life 116.12 966 80% 1207 downrated 1
wiki_arts 159.72 635 80% 794 downrated 1
wiki_society 150.95 673 80% 841 downrated 1
wiki_linguistics 129.84 817 80% 1021 downrated 1
wiki_physical_science 93.75 1254 80% 1567 downrated 1
wiki_history 124.07 831 80% 1039 downrated 1
early_modern_science 582.31 141 80% 176 downrated 1
religious_translated 425.58 230 80% 288 downrated 1
cooking 553.36 234 80% 292 downrated 1
legal_scotus 124.79 841 80% 1051 downrated 1
eu_parliament_debates 348.35 277 80% 346 downrated 1
openstax_science 85.06 1304 80% 1630 downrated 1
openstax_society 126.87 898 80% 1122 downrated 1
wpa_life_histories 242.50 377 80% 471 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.