Base difficulty: Level 30 edit
Level distribution for noun (mental_construct): 16: 9 24: 4 27: 1 30: 9 32: 2
No difficulty overrides set. The base difficulty level will be used for all languages.
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
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 |
169.53 | 636 | 100% | 584 | 2 |
20th_books |
139.53 | 737 | 100% | 705 | 2 |
wiki_vital |
95.29 | 1457 | 100% | 1457 | 1 |
wiki_math |
45.24 | 2122 | 100% | 2122 | 1 |
wiki_geography |
44.52 | 2720 | 100% | 2720 | 1 |
wiki_biology |
56.52 | 2410 | 100% | 2410 | 1 |
wiki_modern_life |
73.60 | 1986 | 100% | 1986 | 1 |
early_modern_science |
229.78 | 467 | 100% | 467 | 1 |
religious_translated |
50.02 | 1898 | 100% | 1898 | 1 |
cooking |
82.71 | 1305 | 100% | 1305 | 1 |
legal_scotus |
83.90 | 1491 | 100% | 1491 | 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.