Base Difficulty

Base difficulty: Level 2 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: 951 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 176.67 621 100% 547 2
20th_books 118.41 902 100% 790 2
wiki_math 0.00 — — — 0
wiki_geography 72.13 3596 100% 1876 2
wiki_biology 381.77 612 100% 348 2
wiki_modern_life 0.00 — — — 0
wiki_arts 63.82 3728 100% 2056 2
wiki_society 75.09 2778 100% 1795 2
wiki_linguistics 54.99 3228 100% 1836 2
wiki_physical_science 0.00 — — — 0
wiki_history 34.36 3815 100% 3815 1
early_modern_science 222.01 771 100% 510 2
religious_translated 334.35 401 100% 324 2
cooking 38.30 2093 100% 2093 1
legal_scotus 164.89 1437 100% 784 2
eu_parliament_debates 116.90 1189 100% 919 2
openstax_science 28.66 3918 100% 3918 1
openstax_society 42.13 2962 100% 2962 1
wpa_life_histories 74.81 1533 100% 1168 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.