Base Difficulty

Base difficulty: Level 355 edit

Level distribution for adjective (physical_property): -1: 2 3: 1 11: 13 14: 18 17: 7 18: 19 20: 2 340: 1 355: 37 360: 1 370: 1 380: 1 420: 1 1000: 1 1010: 3 1040: 8 1050: 5 1090: 2 1120: 15 1209: 1

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325

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 244.50 108 17% 498 downrated 3
20th_books 229.31 115 17% 551 downrated 3
wiki_math 57.97 583 17% 2168 downrated 3
wiki_geography 120.99 210 17% 918 downrated 3
wiki_biology 268.13 78 17% 379 downrated 3
wiki_modern_life 170.22 134 17% 570 downrated 3
wiki_arts 120.36 202 17% 888 downrated 3
wiki_society 73.56 375 17% 1567 downrated 2
wiki_linguistics 168.33 161 17% 721 downrated 3
wiki_physical_science 126.40 261 17% 1009 downrated 3
wiki_history 103.71 200 17% 941 downrated 3
early_modern_science 202.86 109 17% 537 downrated 3
religious_translated 141.19 177 17% 863 downrated 2
cooking 134.07 263 17% 1102 downrated 2
legal_scotus 80.74 326 17% 1514 downrated 2
eu_parliament_debates 104.78 310 17% 1171 downrated 2
openstax_science 122.09 211 17% 946 downrated 2
openstax_society 118.13 232 17% 1030 downrated 2
wpa_life_histories 187.94 133 17% 696 downrated 3

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.