Base Difficulty

Base difficulty: Level 24 edit

Level distribution for noun (building_part): 19: 1 24: 13 120: 22 1000: 2 1010: 1 1040: 2 1070: 1 1090: 1 1201: 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
basic_english Basic (1 of 2) 600
cambridge_yle Starters (1 of 3) 325
cefr A1 (1 of 6) 800

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 134.48 662 94% 702 downrated 1
20th_books 202.79 489 94% 518 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 60.24 2038 94% 2160 downrated 1
wiki_biology 162.94 771 94% 817 downrated 1
wiki_modern_life 178.40 691 94% 732 downrated 1
wiki_arts 177.47 649 94% 688 downrated 1
wiki_society 23.20 4855 94% 5146 downrated 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 104.42 1311 94% 1390 downrated 1
wiki_history 55.09 2201 94% 2333 downrated 1
early_modern_science 74.19 1441 94% 1527 downrated 1
religious_translated 75.61 1262 94% 1338 downrated 1
cooking 0.00 — — — 0
legal_scotus 12.37 5597 94% 5933 downrated 1
eu_parliament_debates 13.98 4195 94% 4447 downrated 1
openstax_science 197.23 678 94% 719 downrated 1
openstax_society 35.38 3259 94% 3455 downrated 1
wpa_life_histories 101.59 929 94% 985 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.