Base Difficulty

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

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 69.88 1320 100% 1320 1
20th_books 90.44 1073 100% 1073 1
wiki_math 27.64 2977 100% 2977 1
wiki_geography 146.86 912 100% 912 1
wiki_biology 49.06 2755 100% 2755 1
wiki_modern_life 93.84 1572 100% 1572 1
wiki_arts 48.44 2844 100% 2844 1
wiki_society 0.00 — — — 0
wiki_linguistics 40.57 2804 100% 2804 1
wiki_physical_science 95.95 1523 100% 1523 1
wiki_history 122.08 1075 100% 1075 1
early_modern_science 81.97 1430 100% 1430 1
religious_translated 152.19 714 100% 714 1
cooking 27.04 2579 100% 2579 1
legal_scotus 49.77 2343 100% 2343 1
eu_parliament_debates 64.66 1694 100% 1694 1
openstax_science 35.30 3387 100% 3387 1
openstax_society 0.00 — — — 0
wpa_life_histories 239.75 456 100% 456 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.