Base Difficulty

Base difficulty: Level 28 edit

Level distribution for noun (animal): 2: 11 28: 16 125: 20 130: 43 278: 12 1010: 15 1078: 19 1090: 4 1399: 9

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: 1349 (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 25.98 3187 100% 3187 1
20th_books 21.24 3662 100% 3662 1
wiki_math 0.00 — — — 0
wiki_geography 37.14 3674 100% 3674 1
wiki_biology 156.95 868 100% 868 1
wiki_modern_life 58.40 2514 100% 2514 1
wiki_arts 0.00 — — — 0
wiki_society 26.70 4794 100% 4794 1
wiki_linguistics 27.41 3684 100% 3684 1
wiki_physical_science 0.00 — — — 0
wiki_history 0.00 — — — 0
early_modern_science 126.06 908 100% 908 1
religious_translated 242.92 453 100% 453 1
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 24.54 3296 100% 3296 1
openstax_science 0.00 — — — 0
openstax_society 20.25 5203 100% 5203 1
wpa_life_histories 116.97 876 100% 876 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.