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 |
226.94 | 456 | 100% | 456 | 1 |
20th_books |
232.85 | 454 | 100% | 454 | 1 |
wiki_math |
124.73 | 1071 | 100% | 1071 | 1 |
wiki_geography |
144.95 | 933 | 100% | 933 | 1 |
wiki_biology |
96.34 | 1453 | 100% | 1453 | 1 |
wiki_modern_life |
120.44 | 1206 | 100% | 1206 | 1 |
wiki_arts |
135.12 | 995 | 100% | 995 | 1 |
wiki_society |
110.00 | 1273 | 100% | 1273 | 1 |
wiki_linguistics |
119.84 | 1086 | 100% | 1086 | 1 |
wiki_physical_science |
78.82 | 1839 | 100% | 1839 | 1 |
wiki_history |
148.74 | 878 | 100% | 878 | 1 |
early_modern_science |
257.43 | 421 | 100% | 421 | 1 |
religious_translated |
226.66 | 474 | 100% | 474 | 1 |
cooking |
707.65 | 230 | 100% | 230 | 1 |
legal_scotus |
14.57 | 5536 | 100% | 5536 | 1 |
eu_parliament_debates |
94.02 | 1262 | 100% | 1262 | 1 |
openstax_science |
44.05 | 2859 | 100% | 2859 | 1 |
openstax_society |
122.36 | 1166 | 100% | 1166 | 1 |
wpa_life_histories |
431.35 | 283 | 100% | 283 | 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.