Base Difficulty

Base difficulty: Level 8 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: 211 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 1299.25 104 100% 98 3
20th_books 1404.01 95 100% 87 3
wiki_math 140.90 1640 100% 713 3
wiki_geography 760.23 299 100% 157 3
wiki_biology 667.49 360 100% 190 3
wiki_modern_life 507.96 612 100% 263 3
wiki_arts 604.58 327 100% 195 3
wiki_society 387.66 748 100% 350 3
wiki_linguistics 647.05 438 100% 204 3
wiki_physical_science 322.55 932 100% 450 3
wiki_history 566.62 253 100% 195 3
early_modern_science 501.18 260 100% 213 3
religious_translated 462.04 274 100% 243 3
cooking 271.57 522 100% 522 1
legal_scotus 145.72 1184 100% 857 2
eu_parliament_debates 159.47 870 100% 697 2
openstax_science 224.01 995 100% 599 3
openstax_society 550.19 480 100% 241 3
wpa_life_histories 3123.85 47 100% 42 3

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.