Base difficulty: Level 15 edit
Level distribution for noun (building_structure): 1: 10 8: 15 15: 14 16: 10 23: 10 27: 6 31: 2 32: 23
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
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 |
14.16 | 4881 | 100% | 4881 | 1 |
20th_books |
16.45 | 4208 | 100% | 4208 | 1 |
wiki_vital |
625.66 | 294 | 100% | 166 | 2 |
wiki_math |
87.09 | 2086 | 100% | 1208 | 2 |
wiki_geography |
0.00 | — | — | — | 0 |
wiki_biology |
1860.71 | 78 | 100% | 52 | 2 |
wiki_modern_life |
252.88 | 1037 | 100% | 535 | 2 |
early_modern_science |
80.17 | 2442 | 100% | 1345 | 2 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
34.77 | 4562 | 100% | 2739 | 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.