Base Difficulty

Base difficulty: Level 9 edit

Level distribution for noun (emotion_feeling): 9: 11 13: 12 16: 4 100: 10 390: 1 450: 1 1030: 1 1060: 1 1070: 1 1120: 1

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1299 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr B1 (3 of 6) 4200

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 118.23 790 100% 790 1
20th_books 129.49 752 100% 752 1
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 177.79 743 100% 743 1
wiki_modern_life 28.81 4581 100% 4581 1
wiki_arts 26.53 4477 100% 4477 1
wiki_society 89.07 1531 100% 1531 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 35.05 3488 100% 3488 1
wiki_history 33.88 3575 100% 3575 1
early_modern_science 38.36 2679 100% 2679 1
religious_translated 239.45 442 100% 442 1
cooking 31.72 2345 100% 2345 1
legal_scotus 28.94 3405 100% 3405 1
eu_parliament_debates 9.49 5282 100% 5282 1
openstax_science 220.68 631 100% 631 1
openstax_society 77.06 1791 100% 1791 1
wpa_life_histories 41.84 2064 100% 2064 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.