Base Difficulty

Base difficulty: Level 17 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: 1571 (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 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 106.15 962 100% 859 2
20th_books 108.54 998 100% 866 2
wiki_math 0.00 — — — 0
wiki_geography 32.05 4168 100% 4168 1
wiki_biology 52.68 2582 100% 2582 1
wiki_modern_life 108.42 1369 100% 1369 1
wiki_arts 0.00 — — — 0
wiki_society 40.15 3432 100% 3432 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 40.91 3184 100% 3184 1
wiki_history 28.76 4449 100% 4449 1
early_modern_science 45.94 2406 100% 2406 1
religious_translated 64.46 1585 100% 1585 1
cooking 0.00 — — — 0
legal_scotus 48.17 2724 100% 2086 2
eu_parliament_debates 107.41 1315 100% 981 2
openstax_science 29.92 3829 100% 3829 1
openstax_society 66.97 2066 100% 2066 1
wpa_life_histories 67.90 1561 100% 1348 2

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.