Base difficulty: Level 1202 edit
Level distribution for noun (time_period): 6: 4 22: 25 220: 15 405: 3 1030: 2 1050: 1 1070: 1 1120: 4 1200: 1 1202: 2 1399: 14
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
cefr |
B1 (3 of 6) | 4200 |
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 |
2.20 | 1221 | 3% | 20000 capped | 1 |
20th_books |
2.66 | 1067 | 3% | 20000 capped | 1 |
wiki_math |
0.67 | 3332 | 3% | 8000 capped | 1 |
wiki_geography |
2.60 | 1590 | 3% | 9000 capped | 1 |
wiki_biology |
60.20 | 1137 | 3% | 2271 downrated | 2 |
wiki_modern_life |
3.39 | 1259 | 3% | 10000 capped | 1 |
wiki_arts |
5.77 | 643 | 3% | 10000 capped | 1 |
wiki_society |
1.13 | 3542 | 3% | 11000 capped | 1 |
wiki_linguistics |
1.28 | 2660 | 3% | 9000 capped | 1 |
wiki_physical_science |
0.88 | 3982 | 3% | 8000 capped | 1 |
wiki_history |
2.23 | 1777 | 3% | 9000 capped | 1 |
early_modern_science |
21.34 | 1678 | 3% | 4321 downrated | 2 |
religious_translated |
1.64 | 1764 | 3% | 10400 capped | 1 |
cooking |
1.57 | 1691 | 3% | 5200 capped | 1 |
legal_scotus |
0.87 | 3485 | 3% | 20000 capped | 1 |
eu_parliament_debates |
2.36 | 1412 | 3% | 11000 capped | 1 |
openstax_science |
36.81 | 1279 | 3% | 3251 downrated | 2 |
openstax_society |
0.97 | 3593 | 3% | 11000 capped | 1 |
wpa_life_histories |
1.21 | 2077 | 3% | 20000 capped | 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.