Base difficulty: Level 4 edit
Level distribution for numeral (cardinal): 4: 31 490: 72
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
cefr |
A1 (1 of 6) | 800 |
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 |
297.09 | 348 | 100% | 348 | 1 |
20th_books |
267.76 | 388 | 100% | 388 | 1 |
wiki_math |
449.25 | 315 | 100% | 315 | 1 |
wiki_geography |
548.40 | 192 | 100% | 192 | 1 |
wiki_biology |
652.34 | 150 | 100% | 150 | 1 |
wiki_modern_life |
526.85 | 179 | 100% | 179 | 1 |
wiki_arts |
558.00 | 179 | 100% | 179 | 1 |
wiki_society |
364.67 | 301 | 100% | 301 | 1 |
wiki_linguistics |
439.61 | 278 | 100% | 278 | 1 |
wiki_physical_science |
375.01 | 345 | 100% | 345 | 1 |
wiki_history |
511.12 | 183 | 100% | 183 | 1 |
early_modern_science |
504.60 | 204 | 100% | 204 | 1 |
religious_translated |
414.81 | 278 | 100% | 278 | 1 |
cooking |
1539.25 | 106 | 100% | 106 | 1 |
legal_scotus |
159.68 | 825 | 100% | 825 | 1 |
eu_parliament_debates |
179.02 | 663 | 100% | 663 | 1 |
openstax_science |
416.01 | 286 | 100% | 286 | 1 |
openstax_society |
327.39 | 379 | 100% | 379 | 1 |
wpa_life_histories |
667.08 | 180 | 100% | 180 | 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.