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 |
|---|---|---|
basic_english |
Basic (1 of 2) | 600 |
cambridge_yle |
Starters (1 of 3) | 325 |
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 |
903.89 | 140 | 100% | 140 | 1 |
20th_books |
954.26 | 138 | 100% | 138 | 1 |
wiki_math |
0.00 | — | — | — | 0 |
wiki_geography |
99.68 | 1320 | 100% | 1320 | 1 |
wiki_biology |
167.65 | 797 | 100% | 797 | 1 |
wiki_modern_life |
74.30 | 1977 | 100% | 1977 | 1 |
wiki_arts |
146.27 | 866 | 100% | 866 | 1 |
wiki_society |
90.53 | 1504 | 100% | 1504 | 1 |
wiki_linguistics |
35.93 | 2861 | 100% | 2861 | 1 |
wiki_physical_science |
128.33 | 1123 | 100% | 1123 | 1 |
wiki_history |
114.46 | 1103 | 100% | 1103 | 1 |
early_modern_science |
362.51 | 294 | 100% | 294 | 1 |
religious_translated |
436.55 | 265 | 100% | 265 | 1 |
cooking |
300.25 | 500 | 100% | 500 | 1 |
legal_scotus |
26.02 | 3658 | 100% | 3658 | 1 |
eu_parliament_debates |
25.27 | 3112 | 100% | 3112 | 1 |
openstax_science |
83.38 | 1655 | 100% | 1655 | 1 |
openstax_society |
86.13 | 1610 | 100% | 1610 | 1 |
wpa_life_histories |
978.82 | 135 | 100% | 135 | 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.