Base Difficulty

Base difficulty: Level 18 edit

Level distribution for pronoun (pronoun_other): 9: 1 10: 3 11: 6 18: 9 226: 2

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: 504 (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 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 984.89 129 100% 129 1
20th_books 910.35 142 100% 142 1
wiki_math 53.12 1936 100% 1936 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 29.41 4595 100% 4595 1
wiki_arts 100.43 1374 100% 1374 1
wiki_society 85.42 1672 100% 1672 1
wiki_linguistics 51.05 2351 100% 2351 1
wiki_physical_science 0.00 — — — 0
wiki_history 116.57 1126 100% 1126 1
early_modern_science 451.45 232 100% 232 1
religious_translated 587.28 210 100% 210 1
cooking 83.39 1300 100% 1300 1
legal_scotus 410.23 289 100% 289 1
eu_parliament_debates 223.74 552 100% 552 1
openstax_science 35.74 3352 100% 3352 1
openstax_society 88.05 1564 100% 1564 1
wpa_life_histories 409.84 291 100% 291 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.