Base Difficulty

Base difficulty: Level 379 edit

Level distribution for adjective (chemical_physical): 379: 8 1040: 1 1050: 14 1120: 6 1399: 5

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: 7051 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 13.56 1296 17% 6492 downrated 2
20th_books 13.22 1383 17% 6745 downrated 2
wiki_math 23.87 1304 17% 4806 downrated 2
wiki_geography 0.00 — — — 0
wiki_biology 8.42 2688 17% 9000 capped 1
wiki_modern_life 5.19 4401 17% 10000 capped 1
wiki_arts 5.73 3898 17% 10000 capped 1
wiki_society 8.22 2836 17% 11000 capped 1
wiki_linguistics 18.45 1183 17% 7098 downrated 1
wiki_physical_science 47.44 618 17% 2960 downrated 2
wiki_history 8.45 2696 17% 9000 capped 1
early_modern_science 13.10 2019 17% 8220 downrated 2
religious_translated 21.13 835 17% 5010 downrated 1
cooking 0.00 — — — 0
legal_scotus 3.68 5540 17% 19726 downrated 2
eu_parliament_debates 8.07 2532 17% 10238 downrated 2
openstax_science 25.70 1126 17% 5260 downrated 2
openstax_society 13.30 2522 17% 9511 downrated 2
wpa_life_histories 7.17 2104 17% 12624 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.