Base difficulty: Level 205 edit
Level distribution for noun (tool): 19: 2 205: 31 460: 2 1000: 15 1040: 13 1050: 1 1078: 5 1090: 2 1203: 1 1209: 1 1210: 7 1216: 1 1221: 1 1222: 2 1224: 8 1399: 4
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cefr |
A2 (2 of 6) | 2100 |
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 |
59.47 | 2204 | 100% | 1426 | 2 |
20th_books |
51.11 | 2414 | 100% | 1562 | 2 |
wiki_math |
306.04 | 604 | 100% | 428 | 2 |
wiki_geography |
80.20 | 1765 | 100% | 1765 | 1 |
wiki_biology |
51.23 | 2639 | 100% | 2639 | 1 |
wiki_modern_life |
211.90 | 843 | 100% | 653 | 2 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
42.97 | 3220 | 100% | 3220 | 1 |
wiki_linguistics |
38.16 | 2916 | 100% | 2916 | 1 |
wiki_physical_science |
320.54 | 628 | 100% | 444 | 2 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
75.94 | 2146 | 100% | 1390 | 2 |
religious_translated |
55.17 | 2934 | 100% | 1581 | 2 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
16.60 | 5092 | 100% | 5092 | 1 |
eu_parliament_debates |
37.18 | 2519 | 100% | 2519 | 1 |
openstax_science |
318.76 | 611 | 100% | 436 | 2 |
openstax_society |
65.31 | 2788 | 100% | 1828 | 2 |
wpa_life_histories |
49.30 | 2382 | 100% | 1679 | 2 |
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.