Base difficulty: Level 24 edit
Level distribution for noun (chemical_compound): -1: 1 19: 2 24: 5 30: 2
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Tier Signals
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Corpus Frequency
| Corpus | Freq (per M) | Best form | Share | Zipf rank | Forms |
|---|---|---|---|---|---|
19th_books |
0.00 | — | — | — | 0 |
20th_books |
0.00 | — | — | — | 0 |
wiki_vital |
226.20 | 503 | 100% | 503 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
27.18 | 4305 | 100% | 4305 | 1 |
wiki_modern_life |
85.36 | 1697 | 100% | 1697 | 1 |
early_modern_science |
346.40 | 312 | 100% | 312 | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
0.00 | — | — | — | 0 |
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.