Base Difficulty

Base difficulty: Level 5 edit

Level distribution for noun (family_relation): 5: 11 18: 8 102: 7 302: 10 315: 7 1002: 12 1050: 1 1120: 3 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: 674 (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 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 384.26 217 50% 283 downrated 4
20th_books 300.97 254 50% 357 downrated 4
wiki_math 9.79 3650 50% 7300 downrated 1
wiki_geography 21.41 3184 50% 6368 downrated 1
wiki_biology 0.00 — — — 0
wiki_modern_life 40.72 1813 50% 3626 downrated 1
wiki_arts 133.05 536 50% 935 downrated 2
wiki_society 63.04 1079 50% 2158 downrated 1
wiki_linguistics 47.78 1349 50% 2698 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 378.61 153 50% 264 downrated 2
early_modern_science 22.39 2456 50% 4912 downrated 1
religious_translated 447.47 206 50% 261 downrated 3
cooking 0.00 — — — 0
legal_scotus 38.34 2303 50% 2613 downrated 3
eu_parliament_debates 0.00 — — — 0
openstax_science 11.42 4637 50% 9274 downrated 1
openstax_society 77.64 1435 50% 1659 downrated 3
wpa_life_histories 848.52 119 50% 145 downrated 7

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.