Base difficulty: Level 1399 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
No difficulty overrides set. The base difficulty level will be used for all languages.
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Tier Signals
| Source | Tier | Rank used |
|---|---|---|
basic_english |
Extended (2 of 2) | 1600 |
cambridge_yle |
Flyers (3 of 3) | 1200 |
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 |
6.64 | 4521 | 40% | 11302 downrated | 1 |
20th_books |
37.44 | 1136 | 40% | 2435 downrated | 2 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
50.47 | 1911 | 40% | 2764 downrated | 2 |
wiki_biology |
0.00 | — | — | — | 0 |
wiki_modern_life |
14.02 | 3955 | 40% | 9888 downrated | 1 |
wiki_arts |
11.78 | 4404 | 40% | 10000 capped | 1 |
wiki_society |
75.40 | 1378 | 40% | 1879 downrated | 2 |
wiki_linguistics |
0.00 | — | — | — | 0 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
22.48 | 2440 | 40% | 6100 downrated | 1 |
early_modern_science |
0.00 | — | — | — | 0 |
religious_translated |
7.12 | 4381 | 40% | 10400 capped | 1 |
cooking |
0.00 | — | — | — | 0 |
legal_scotus |
8.50 | 4357 | 40% | 10892 downrated | 1 |
eu_parliament_debates |
0.00 | — | — | — | 0 |
openstax_science |
10.96 | 4035 | 40% | 10087 downrated | 1 |
openstax_society |
112.83 | 568 | 40% | 1203 downrated | 2 |
wpa_life_histories |
45.02 | 948 | 40% | 2088 downrated | 2 |
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.