Base Difficulty

Base difficulty: Level 8 edit

Level distribution for verb (perception): 3: 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 1753.82 134 100% 71 3
20th_books 2115.35 111 100% 62 3
wiki_math 65.14 1638 100% 1638 1
wiki_geography 0.00 — — — 0
wiki_biology 77.13 1777 100% 1777 1
wiki_modern_life 79.06 1835 100% 1835 1
wiki_arts 147.63 1237 100% 889 2
wiki_society 102.19 1957 100% 1300 2
wiki_linguistics 96.56 1591 100% 1140 2
wiki_physical_science 49.67 2670 100% 2670 1
wiki_history 112.88 1988 100% 1136 2
early_modern_science 379.00 379 100% 289 2
religious_translated 437.15 392 100% 244 2
cooking 184.68 707 100% 707 1
legal_scotus 126.58 1302 100% 952 2
eu_parliament_debates 374.57 385 100% 312 3
openstax_science 294.51 602 100% 455 3
openstax_society 315.24 591 100% 431 3
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.