Base Difficulty

Base difficulty: Level 355 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: 6983 (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 11.31 1622 20% 8110 downrated 1
20th_books 8.71 1994 20% 9970 downrated 1
wiki_math 24.71 1080 20% 5400 downrated 1
wiki_geography 0.00 — — — 0
wiki_biology 13.06 2091 20% 9000 capped 1
wiki_modern_life 12.45 2360 20% 10000 capped 1
wiki_arts 15.33 1819 20% 9095 downrated 1
wiki_society 13.65 2044 20% 10220 downrated 1
wiki_linguistics 12.68 1988 20% 9000 capped 1
wiki_physical_science 45.88 614 20% 3070 downrated 1
wiki_history 10.50 2600 20% 9000 capped 1
early_modern_science 40.55 536 20% 2680 downrated 1
religious_translated 58.11 378 20% 1890 downrated 1
cooking 23.66 1006 20% 5030 downrated 1
legal_scotus 4.53 4195 20% 20000 capped 1
eu_parliament_debates 0.00 — — — 0
openstax_science 20.36 1349 20% 6745 downrated 1
openstax_society 4.71 4687 20% 11000 capped 1
wpa_life_histories 6.86 2553 20% 12765 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.