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: 3176 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 11.36 2726 36% 7496 downrated 1
20th_books 9.41 3130 36% 8608 downrated 1
wiki_math 10.89 2813 36% 7736 downrated 1
wiki_geography 66.19 716 36% 1969 downrated 1
wiki_biology 61.99 799 36% 2197 downrated 1
wiki_modern_life 49.91 1033 36% 2841 downrated 1
wiki_arts 26.30 1900 36% 5225 downrated 1
wiki_society 51.09 959 36% 2637 downrated 1
wiki_linguistics 44.07 1064 36% 2926 downrated 1
wiki_physical_science 93.86 533 36% 1466 downrated 1
wiki_history 42.55 1123 36% 3088 downrated 1
early_modern_science 32.43 1308 36% 3597 downrated 1
religious_translated 22.57 1634 36% 4494 downrated 1
cooking 0.00 — — — 0
legal_scotus 9.86 3698 36% 10169 downrated 1
eu_parliament_debates 52.63 819 36% 2252 downrated 1
openstax_science 105.87 444 36% 1221 downrated 1
openstax_society 45.81 1126 36% 3096 downrated 1
wpa_life_histories 29.78 1167 36% 3209 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.