Base difficulty: Level 221 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 |
|---|---|---|
cefr |
B2 (4 of 6) | 6900 |
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 |
51.56 | 2138 | 100% | 1610 | 2 |
20th_books |
46.48 | 2160 | 100% | 1702 | 2 |
wiki_math |
49.66 | 2019 | 100% | 2019 | 1 |
wiki_geography |
108.30 | 1264 | 100% | 1264 | 1 |
wiki_biology |
222.62 | 580 | 100% | 580 | 1 |
wiki_modern_life |
654.59 | 139 | 100% | 139 | 1 |
wiki_arts |
51.54 | 2684 | 100% | 2684 | 1 |
wiki_society |
157.93 | 836 | 100% | 836 | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
2353.21 | 40 | 100% | 39 | 2 |
wiki_history |
75.35 | 1817 | 100% | 1817 | 1 |
early_modern_science |
113.15 | 1245 | 100% | 986 | 2 |
religious_translated |
87.49 | 1170 | 100% | 1170 | 1 |
cooking |
32.68 | 2291 | 100% | 2291 | 1 |
legal_scotus |
23.68 | 4054 | 100% | 4054 | 1 |
eu_parliament_debates |
631.07 | 209 | 100% | 196 | 2 |
openstax_science |
2455.78 | 39 | 100% | 38 | 2 |
openstax_society |
97.14 | 1425 | 100% | 1425 | 1 |
wpa_life_histories |
8.51 | 7328 | 100% | 7328 | 1 |
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.