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
No difficulty overrides set. The base difficulty level will be used for all languages.
Add Difficulty Override
python -m storage.admin --calc-ranks to populate)
Tier Signals
| Source | Tier | Rank used |
|---|---|---|
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 |
112.75 | 832 | 100% | 832 | 1 |
20th_books |
132.90 | 736 | 100% | 736 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
339.69 | 323 | 100% | 323 | 1 |
wiki_biology |
229.57 | 547 | 100% | 547 | 1 |
wiki_modern_life |
74.30 | 1982 | 100% | 1982 | 1 |
wiki_arts |
57.83 | 2293 | 100% | 2293 | 1 |
wiki_society |
30.05 | 4167 | 100% | 4167 | 1 |
wiki_linguistics |
22.46 | 3977 | 100% | 3977 | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
128.42 | 952 | 100% | 952 | 1 |
early_modern_science |
159.20 | 686 | 100% | 686 | 1 |
religious_translated |
38.20 | 2405 | 100% | 2405 | 1 |
cooking |
97.44 | 1171 | 100% | 1171 | 1 |
legal_scotus |
8.12 | 7281 | 100% | 7281 | 1 |
eu_parliament_debates |
47.87 | 2126 | 100% | 2126 | 1 |
openstax_science |
38.99 | 3138 | 100% | 3138 | 1 |
openstax_society |
59.34 | 2286 | 100% | 2286 | 1 |
wpa_life_histories |
208.29 | 524 | 100% | 524 | 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.