Base difficulty: Level 22 edit
Level distribution for verb (change): 22: 4 28: 1 109: 1 140: 1 162: 2 194: 1 254: 1 255: 1 309: 2 311: 1 321: 16 410: 2 415: 2 475: 5 1040: 1 1090: 1 1399: 38
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cambridge_yle |
Starters (1 of 3) | 325 |
cefr |
A1 (1 of 6) | 800 |
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 |
270.72 | 653 | 100% | 350 | 3 |
20th_books |
413.11 | 466 | 100% | 242 | 4 |
wiki_math |
408.83 | 712 | 100% | 303 | 4 |
wiki_geography |
513.72 | 446 | 100% | 253 | 4 |
wiki_biology |
253.65 | 1458 | 100% | 542 | 4 |
wiki_modern_life |
600.06 | 619 | 100% | 223 | 4 |
wiki_arts |
445.67 | 692 | 100% | 299 | 4 |
wiki_society |
339.38 | 991 | 100% | 405 | 4 |
wiki_linguistics |
339.65 | 1158 | 100% | 376 | 4 |
wiki_physical_science |
349.40 | 1362 | 100% | 416 | 4 |
wiki_history |
462.36 | 430 | 100% | 262 | 3 |
early_modern_science |
102.14 | 2720 | 100% | 1023 | 3 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
85.64 | 1275 | 100% | 1275 | 1 |
legal_scotus |
72.45 | 3353 | 100% | 1232 | 4 |
eu_parliament_debates |
440.48 | 478 | 100% | 259 | 5 |
openstax_science |
338.71 | 1051 | 100% | 404 | 4 |
openstax_society |
348.88 | 984 | 100% | 396 | 4 |
wpa_life_histories |
937.98 | 193 | 100% | 121 | 4 |
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.