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: 1465 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr B1 (3 of 6) 4200

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 59.33 1816 100% 1426 2
20th_books 129.14 802 100% 740 2
wiki_math 67.95 1632 100% 1632 1
wiki_geography 76.69 1841 100% 1841 1
wiki_biology 116.39 1198 100% 1198 1
wiki_modern_life 203.94 624 100% 624 1
wiki_arts 131.57 1020 100% 1020 1
wiki_society 0.00 — — — 0
wiki_linguistics 25.09 3893 100% 3893 1
wiki_physical_science 112.19 1302 100% 1302 1
wiki_history 33.08 3965 100% 3965 1
early_modern_science 94.88 1234 100% 1234 1
religious_translated 0.00 — — — 0
cooking 157.72 786 100% 786 1
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 76.84 1787 100% 1787 1
openstax_society 43.37 2912 100% 2912 1
wpa_life_histories 91.51 1080 100% 1080 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.