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 |
182.37 | 545 | 100% | 545 | 1 |
20th_books |
189.52 | 558 | 100% | 558 | 1 |
wiki_math |
107.40 | 1179 | 100% | 1179 | 1 |
wiki_geography |
259.98 | 476 | 100% | 476 | 1 |
wiki_biology |
310.29 | 385 | 100% | 385 | 1 |
wiki_modern_life |
214.91 | 580 | 100% | 580 | 1 |
wiki_arts |
213.42 | 585 | 100% | 585 | 1 |
wiki_society |
168.54 | 783 | 100% | 783 | 1 |
wiki_linguistics |
183.80 | 715 | 100% | 715 | 1 |
wiki_physical_science |
144.83 | 1012 | 100% | 1012 | 1 |
wiki_history |
269.80 | 420 | 100% | 420 | 1 |
early_modern_science |
279.83 | 385 | 100% | 385 | 1 |
religious_translated |
147.50 | 739 | 100% | 739 | 1 |
cooking |
788.78 | 206 | 100% | 206 | 1 |
legal_scotus |
100.59 | 1311 | 100% | 1311 | 1 |
eu_parliament_debates |
115.06 | 1040 | 100% | 1040 | 1 |
openstax_science |
149.62 | 954 | 100% | 954 | 1 |
openstax_society |
141.37 | 1004 | 100% | 1004 | 1 |
wpa_life_histories |
489.83 | 254 | 100% | 254 | 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.