Base Difficulty

Base difficulty: Level 9 edit

Level distribution for noun (emotion_feeling): 9: 7 13: 4 100: 10 303: 16 390: 1 450: 1 1030: 1 1060: 1 1070: 1 1120: 1 1399: 11

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: 1717 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A2 (2 of 6) 2100

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 144.19 420 50% 700 downrated 2
20th_books 121.68 482 50% 844 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 14.07 4228 50% 8456 downrated 1
wiki_modern_life 16.42 4208 50% 8416 downrated 1
wiki_arts 27.75 2506 50% 5012 downrated 1
wiki_society 72.42 929 50% 1858 downrated 1
wiki_linguistics 12.63 3880 50% 7760 downrated 1
wiki_physical_science 0.00 — — — 0
wiki_history 32.28 2125 50% 4250 downrated 1
early_modern_science 33.41 1718 50% 3436 downrated 1
religious_translated 347.93 187 50% 350 downrated 2
cooking 0.00 — — — 0
legal_scotus 59.50 1335 50% 2054 downrated 2
eu_parliament_debates 54.50 1353 50% 1934 downrated 2
openstax_science 25.97 2481 50% 4962 downrated 1
openstax_society 87.43 1012 50% 1561 downrated 2
wpa_life_histories 33.84 1579 50% 2680 downrated 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.