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 |
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 |
22.28 | 3610 | 100% | 3610 | 1 |
20th_books |
33.65 | 2500 | 100% | 2500 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
203.86 | 652 | 100% | 652 | 1 |
wiki_modern_life |
327.19 | 329 | 100% | 329 | 1 |
wiki_arts |
48.56 | 2844 | 100% | 2844 | 1 |
wiki_society |
108.41 | 1294 | 100% | 1294 | 1 |
wiki_linguistics |
34.93 | 3128 | 100% | 3128 | 1 |
wiki_physical_science |
83.34 | 1756 | 100% | 1756 | 1 |
wiki_history |
43.25 | 3127 | 100% | 3127 | 1 |
early_modern_science |
23.54 | 4044 | 100% | 4044 | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
108.48 | 1212 | 100% | 1212 | 1 |
eu_parliament_debates |
22.31 | 3499 | 100% | 3499 | 1 |
openstax_science |
130.50 | 1088 | 100% | 1088 | 1 |
openstax_society |
185.60 | 768 | 100% | 768 | 1 |
wpa_life_histories |
11.43 | 5956 | 100% | 5956 | 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.