Base difficulty: Level 214 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 1399: 4
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
cambridge_yle |
Flyers (3 of 3) | 1200 |
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 |
8.97 | 1322 | 7% | 9437 downrated | 3 |
20th_books |
9.59 | 1521 | 7% | 8868 downrated | 3 |
wiki_math |
2.93 | 2231 | 7% | 8000 capped | 1 |
wiki_geography |
2.15 | 4147 | 7% | 9000 capped | 1 |
wiki_biology |
3.44 | 2635 | 7% | 9000 capped | 1 |
wiki_modern_life |
4.24 | 2312 | 7% | 10000 capped | 1 |
wiki_arts |
3.48 | 2657 | 7% | 10000 capped | 1 |
wiki_society |
4.69 | 1992 | 7% | 11000 capped | 1 |
wiki_linguistics |
1.68 | 3904 | 7% | 9000 capped | 1 |
wiki_physical_science |
3.00 | 2957 | 7% | 8000 capped | 1 |
wiki_history |
3.31 | 2744 | 7% | 9000 capped | 1 |
early_modern_science |
4.08 | 1865 | 7% | 10400 capped | 1 |
religious_translated |
6.37 | 1471 | 7% | 10400 capped | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
28.86 | 420 | 7% | 4102 downrated | 4 |
eu_parliament_debates |
1.86 | 3091 | 7% | 11000 capped | 1 |
openstax_science |
7.25 | 1744 | 7% | 11000 capped | 2 |
openstax_society |
4.99 | 1851 | 7% | 11000 capped | 1 |
wpa_life_histories |
3.88 | 3016 | 7% | 18523 downrated | 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.