Base Difficulty

Base difficulty: Level 30 edit

Level distribution for noun (family_relation): 22: 4 30: 48

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-36 for level
Frequency and Tier Signals
Combined Frequency Rank: 580 (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

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 474.79 244 100% 237 2
20th_books 646.78 203 100% 195 2
wiki_vital 113.44 1180 100% 1180 1
wiki_math 0.00 0
wiki_geography 36.53 3234 100% 3234 1
wiki_biology 214.26 910 100% 624 2
wiki_modern_life 114.46 1937 100% 1193 2
early_modern_science 69.05 1609 100% 1609 1
religious_translated 327.86 350 100% 330 2
cooking 46.45 1840 100% 1840 1
legal_scotus 93.69 1685 100% 1372 2

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.