Base Difficulty

Base difficulty: Level 11 edit

Level distribution for conjunction (conjunction_other): 6: 4 9: 4 10: 1 11: 2 304: 4 1399: 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: 126 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Movers (2 of 3) 750
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 553.96 211 100% 211 1
20th_books 829.79 159 100% 159 1
wiki_math 940.08 134 100% 134 1
wiki_geography 552.18 190 100% 190 1
wiki_biology 948.92 102 100% 102 1
wiki_modern_life 961.81 86 100% 86 1
wiki_arts 741.35 126 100% 126 1
wiki_society 915.38 94 100% 94 1
wiki_linguistics 791.62 151 100% 151 1
wiki_physical_science 1362.73 66 100% 66 1
wiki_history 725.13 130 100% 130 1
early_modern_science 705.08 147 100% 147 1
religious_translated 1316.82 98 100% 98 1
cooking 271.57 519 100% 519 1
legal_scotus 2056.84 43 100% 43 1
eu_parliament_debates 1560.26 72 100% 72 1
openstax_science 1742.19 56 100% 56 1
openstax_society 1380.23 75 100% 75 1
wpa_life_histories 746.17 165 100% 165 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.