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 |
349.88 | 305 | 100% | 305 | 1 |
20th_books |
280.12 | 371 | 100% | 371 | 1 |
wiki_math |
54.67 | 1853 | 100% | 1853 | 1 |
wiki_geography |
59.01 | 2166 | 100% | 2166 | 1 |
wiki_biology |
32.59 | 3774 | 100% | 3774 | 1 |
wiki_modern_life |
103.76 | 1400 | 100% | 1400 | 1 |
wiki_arts |
52.39 | 2502 | 100% | 2502 | 1 |
wiki_society |
24.23 | 4895 | 100% | 4895 | 1 |
wiki_linguistics |
23.02 | 3883 | 100% | 3883 | 1 |
wiki_physical_science |
0.00 | — | — | — | 0 |
wiki_history |
37.73 | 3258 | 100% | 3258 | 1 |
early_modern_science |
138.48 | 801 | 100% | 801 | 1 |
religious_translated |
123.27 | 843 | 100% | 843 | 1 |
cooking |
1021.98 | 160 | 100% | 160 | 1 |
legal_scotus |
27.90 | 3489 | 100% | 3489 | 1 |
eu_parliament_debates |
28.15 | 2947 | 100% | 2947 | 1 |
openstax_science |
69.69 | 1927 | 100% | 1927 | 1 |
openstax_society |
70.47 | 1952 | 100% | 1952 | 1 |
wpa_life_histories |
152.73 | 691 | 100% | 691 | 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.