Base difficulty: Level 22 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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cambridge_yle |
Flyers (3 of 3) | 1200 |
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 |
208.84 | 486 | 100% | 486 | 1 |
20th_books |
213.89 | 491 | 100% | 491 | 1 |
wiki_math |
33.40 | 2652 | 100% | 2652 | 1 |
wiki_geography |
148.65 | 904 | 100% | 904 | 1 |
wiki_biology |
109.59 | 1276 | 100% | 1276 | 1 |
wiki_modern_life |
140.23 | 1005 | 100% | 1005 | 1 |
wiki_arts |
163.32 | 798 | 100% | 798 | 1 |
wiki_society |
211.54 | 595 | 100% | 595 | 1 |
wiki_linguistics |
599.01 | 198 | 100% | 198 | 1 |
wiki_physical_science |
144.92 | 1010 | 100% | 1010 | 1 |
wiki_history |
111.33 | 1184 | 100% | 1184 | 1 |
early_modern_science |
135.86 | 837 | 100% | 837 | 1 |
religious_translated |
147.93 | 736 | 100% | 736 | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
150.93 | 874 | 100% | 874 | 1 |
eu_parliament_debates |
213.53 | 570 | 100% | 570 | 1 |
openstax_science |
140.80 | 1008 | 100% | 1008 | 1 |
openstax_society |
244.08 | 565 | 100% | 565 | 1 |
wpa_life_histories |
140.01 | 738 | 100% | 738 | 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.