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: 573 (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 Movers (2 of 3) 750
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 187.51 457 80% 537 downrated 2
20th_books 223.40 385 80% 453 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 154.61 897 80% 868 2
wiki_biology 170.04 778 80% 780 downrated 2
wiki_modern_life 143.31 752 80% 940 downrated 1
wiki_arts 24.61 4242 80% 5302 downrated 1
wiki_society 0.00 — — — 0
wiki_linguistics 16.66 4396 80% 5495 downrated 1
wiki_physical_science 258.86 523 80% 530 downrated 2
wiki_history 28.57 3685 80% 4606 downrated 1
early_modern_science 167.59 516 80% 645 downrated 1
religious_translated 66.37 1241 80% 1551 downrated 1
cooking 2281.94 50 80% 62 downrated 1
legal_scotus 4.53 9287 80% 11609 downrated 1
eu_parliament_debates 12.23 4397 80% 5496 downrated 1
openstax_science 154.26 870 80% 885 downrated 2
openstax_society 22.47 4080 80% 5100 downrated 1
wpa_life_histories 215.96 429 80% 482 downrated 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.