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: 780 (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 289.86 249 50% 356 downrated 5
20th_books 376.05 195 50% 310 downrated 3
wiki_math 0.00 — — — 0
wiki_geography 17.26 3906 50% 7812 downrated 1
wiki_biology 124.27 901 50% 1087 downrated 3
wiki_modern_life 57.40 1977 50% 2550 downrated 2
wiki_arts 83.13 780 50% 1560 downrated 1
wiki_society 51.43 1371 50% 2742 downrated 1
wiki_linguistics 67.27 966 50% 1932 downrated 1
wiki_physical_science 23.36 2863 50% 5726 downrated 1
wiki_history 211.50 282 50% 514 downrated 2
early_modern_science 35.48 1623 50% 3246 downrated 1
religious_translated 179.94 369 50% 586 downrated 3
cooking 24.78 1774 50% 3548 downrated 1
legal_scotus 50.18 1774 50% 2175 downrated 3
eu_parliament_debates 16.25 3910 50% 4258 downrated 2
openstax_science 18.69 3230 50% 6460 downrated 1
openstax_society 111.92 1233 50% 1217 3
wpa_life_histories 514.74 155 50% 215 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.