Base difficulty: Level 270 edit
Level distribution for noun (concept_idea): 19: 2 26: 1 27: 1 221: 28 270: 30 274: 30 275: 28 280: 25 300: 1 360: 1 380: 2 1000: 1 1030: 1 1060: 5 1070: 6 1110: 4 1120: 4 1399: 66
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
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 |
338.63 | 350 | 100% | 299 | 2 |
20th_books |
420.26 | 293 | 100% | 258 | 2 |
wiki_math |
31.18 | 2784 | 100% | 2784 | 1 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
39.93 | 3585 | 100% | 3585 | 1 |
wiki_arts |
53.52 | 2591 | 100% | 2591 | 1 |
wiki_society |
48.10 | 2914 | 100% | 2914 | 1 |
wiki_linguistics |
37.62 | 2954 | 100% | 2954 | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
36.01 | 3664 | 100% | 3664 | 1 |
early_modern_science |
282.49 | 577 | 100% | 394 | 2 |
religious_translated |
79.17 | 1830 | 100% | 1192 | 2 |
cooking |
31.55 | 2364 | 100% | 2364 | 1 |
legal_scotus |
136.61 | 1121 | 100% | 901 | 2 |
eu_parliament_debates |
99.65 | 1186 | 100% | 1186 | 1 |
openstax_science |
41.14 | 2992 | 100% | 2992 | 1 |
openstax_society |
48.78 | 2675 | 100% | 2675 | 1 |
wpa_life_histories |
205.03 | 586 | 100% | 509 | 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.