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: 720 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600

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 123.74 415 50% 830 downrated 1
20th_books 118.30 445 50% 890 downrated 1
wiki_math 302.88 212 50% 424 downrated 1
wiki_geography 227.05 239 50% 478 downrated 1
wiki_biology 142.18 430 50% 860 downrated 1
wiki_modern_life 196.13 256 50% 512 downrated 1
wiki_arts 308.97 163 50% 326 downrated 1
wiki_society 171.18 322 50% 644 downrated 1
wiki_linguistics 409.75 143 50% 286 downrated 1
wiki_physical_science 274.10 203 50% 406 downrated 1
wiki_history 0.00 — — — 0
early_modern_science 0.00 — — — 0
religious_translated 144.74 381 50% 762 downrated 1
cooking 74.92 822 50% 1644 downrated 1
legal_scotus 255.23 216 50% 432 downrated 1
eu_parliament_debates 198.45 302 50% 604 downrated 1
openstax_science 263.32 203 50% 406 downrated 1
openstax_society 159.42 393 50% 786 downrated 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.