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 |
Basic (1 of 2) | 600 |
cambridge_yle |
Movers (2 of 3) | 750 |
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 |
44.09 | 2508 | 100% | 1960 | 2 |
20th_books |
100.00 | 1101 | 100% | 963 | 2 |
wiki_vital |
63.86 | 3815 | 100% | 1928 | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
63.72 | 3356 | 100% | 1780 | 2 |
wiki_biology |
103.01 | 2501 | 100% | 1281 | 2 |
wiki_modern_life |
140.35 | 1981 | 100% | 986 | 2 |
early_modern_science |
17.65 | 4742 | 100% | 4742 | 1 |
religious_translated |
0.00 | — | — | — | 0 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
7.29 | 7675 | 100% | 7675 | 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.