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 |
167.47 | 592 | 100% | 592 | 1 |
20th_books |
131.88 | 761 | 100% | 761 | 1 |
wiki_math |
26.56 | 3072 | 100% | 3072 | 1 |
wiki_geography |
36.81 | 3703 | 100% | 3703 | 1 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
37.79 | 3756 | 100% | 3756 | 1 |
wiki_arts |
52.86 | 2626 | 100% | 2626 | 1 |
wiki_society |
31.30 | 4254 | 100% | 4254 | 1 |
wiki_linguistics |
32.25 | 3324 | 100% | 3324 | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
58.54 | 2339 | 100% | 2339 | 1 |
early_modern_science |
198.20 | 547 | 100% | 547 | 1 |
religious_translated |
87.49 | 1172 | 100% | 1172 | 1 |
cooking |
549.89 | 286 | 100% | 286 | 1 |
legal_scotus |
6.68 | 8641 | 100% | 8641 | 1 |
eu_parliament_debates |
27.94 | 3081 | 100% | 3081 | 1 |
openstax_science |
0.00 | — | — | — | 0 |
openstax_society |
88.87 | 1550 | 100% | 1550 | 1 |
wpa_life_histories |
180.16 | 602 | 100% | 602 | 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.