Base Difficulty

Base difficulty: Level 10 edit

Level distribution for determiner (determiner_other): 6: 1 8: 1 9: 1 10: 10 11: 3 14: 2 18: 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, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 235 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 200.93 502 100% 502 1
20th_books 222.10 478 100% 478 1
wiki_math 547.04 246 100% 246 1
wiki_geography 1052.11 88 100% 88 1
wiki_biology 1044.67 91 100% 91 1
wiki_modern_life 701.59 129 100% 129 1
wiki_arts 803.51 117 100% 117 1
wiki_society 557.43 166 100% 166 1
wiki_linguistics 700.98 173 100% 173 1
wiki_physical_science 640.90 164 100% 164 1
wiki_history 793.42 115 100% 115 1
early_modern_science 775.71 132 100% 132 1
religious_translated 124.53 849 100% 849 1
cooking 259.11 538 100% 538 1
legal_scotus 263.83 475 100% 475 1
eu_parliament_debates 230.73 533 100% 533 1
openstax_science 630.90 164 100% 164 1
openstax_society 548.47 204 100% 204 1
wpa_life_histories 460.75 264 100% 264 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.