Base Difficulty

Base difficulty: Level 8 edit

Level distribution for verb (perception): 5: 1 8: 2 185: 1 205: 1 214: 12 230: 1 265: 1 279: 1 455: 1 1040: 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

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 1167.41 163 100% 101 3
20th_books 0.00 — — — 0
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 32.60 3773 100% 3773 1
wiki_modern_life 0.00 — — — 0
wiki_arts 175.70 1003 100% 736 2
wiki_society 65.80 3302 100% 1937 2
wiki_linguistics 135.41 1638 100% 870 2
wiki_physical_science 0.00 — — — 0
wiki_history 108.38 1600 100% 1161 2
early_modern_science 248.48 670 100% 447 2
religious_translated 930.87 225 100% 127 2
cooking 0.00 — — — 0
legal_scotus 104.21 1927 100% 1111 2
eu_parliament_debates 252.04 789 100% 473 2
openstax_science 53.12 3844 100% 2071 2
openstax_society 0.00 — — — 0
wpa_life_histories 0.00 — — — 0

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.