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: 808 (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 440.59 387 97% 227 3
20th_books 250.14 674 97% 392 3
wiki_math 0.00 — — — 0
wiki_geography 66.71 3489 97% 2000 2
wiki_biology 349.79 691 97% 385 2
wiki_modern_life 236.18 1021 97% 610 2
wiki_arts 40.36 3258 97% 3356 downrated 1
wiki_society 77.51 2842 97% 1764 2
wiki_linguistics 34.21 3082 97% 3174 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 101.88 2488 97% 1343 2
early_modern_science 142.96 1458 97% 813 2
religious_translated 249.51 679 97% 423 2
cooking 40.47 1985 97% 2045 downrated 1
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 0.00 — — — 0
openstax_society 54.93 3859 97% 2091 2
wpa_life_histories 1024.82 224 97% 117 3

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.