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: 2141 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 212.80 475 100% 475 1
20th_books 157.11 651 100% 651 1
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 46.92 2867 100% 2867 1
wiki_modern_life 74.61 1991 100% 1991 1
wiki_arts 81.50 1692 100% 1692 1
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 61.97 2282 100% 2282 1
wiki_history 34.29 3827 100% 3827 1
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 215.17 614 100% 614 1
legal_scotus 10.12 6849 100% 6849 1
eu_parliament_debates 26.33 3189 100% 3189 1
openstax_science 50.67 2544 100% 2544 1
openstax_society 20.24 5186 100% 5186 1
wpa_life_histories 0.00 — — — 0

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.