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 |
15.43 | 2770 | 50% | 5540 downrated | 1 |
20th_books |
26.19 | 1707 | 50% | 3414 downrated | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
39.03 | 1808 | 50% | 3616 downrated | 1 |
wiki_biology |
40.41 | 1727 | 50% | 3454 downrated | 1 |
wiki_modern_life |
122.80 | 492 | 50% | 984 downrated | 1 |
wiki_arts |
0.00 | — | — | — | 0 |
wiki_society |
17.51 | 3894 | 50% | 7788 downrated | 1 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
48.32 | 1511 | 50% | 3022 downrated | 1 |
wiki_history |
0.00 | — | — | — | 0 |
early_modern_science |
27.15 | 2076 | 50% | 4152 downrated | 1 |
religious_translated |
21.87 | 2170 | 50% | 4340 downrated | 1 |
cooking |
40.57 | 1327 | 50% | 2654 downrated | 1 |
legal_scotus |
16.19 | 3274 | 50% | 6548 downrated | 1 |
eu_parliament_debates |
105.92 | 577 | 50% | 1154 downrated | 1 |
openstax_science |
71.90 | 1317 | 50% | 1860 downrated | 2 |
openstax_society |
17.57 | 3462 | 50% | 6924 downrated | 1 |
wpa_life_histories |
13.56 | 3064 | 50% | 6128 downrated | 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.