Base difficulty: Level 275 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 |
Extended (2 of 2) | 1600 |
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 |
270.19 | 398 | 100% | 373 | 2 |
20th_books |
248.41 | 450 | 100% | 413 | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
37.88 | 3430 | 100% | 3430 | 1 |
wiki_modern_life |
33.06 | 4189 | 100% | 4189 | 1 |
wiki_arts |
33.70 | 3957 | 100% | 3957 | 1 |
wiki_society |
0.00 | — | — | — | 0 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
36.90 | 3451 | 100% | 3451 | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
148.84 | 751 | 100% | 751 | 1 |
religious_translated |
278.54 | 397 | 100% | 397 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
8.70 | 7462 | 100% | 7462 | 1 |
eu_parliament_debates |
27.62 | 3109 | 100% | 3109 | 1 |
openstax_science |
23.69 | 4532 | 100% | 4532 | 1 |
openstax_society |
20.67 | 5146 | 100% | 5146 | 1 |
wpa_life_histories |
136.69 | 809 | 100% | 729 | 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.