Base Difficulty

Base difficulty: Level 12 edit

Level distribution for numeral (ordinal): 12: 10 490: 10

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: 608 (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 123.75 415 50% 830 downrated 1
20th_books 118.32 444 50% 888 downrated 1
wiki_math 303.73 211 50% 422 downrated 1
wiki_geography 229.66 233 50% 466 downrated 1
wiki_biology 143.42 423 50% 846 downrated 1
wiki_modern_life 197.09 254 50% 508 downrated 1
wiki_arts 311.87 158 50% 316 downrated 1
wiki_society 172.34 320 50% 640 downrated 1
wiki_linguistics 409.78 144 50% 288 downrated 1
wiki_physical_science 275.23 200 50% 400 downrated 1
wiki_history 307.69 156 50% 312 downrated 1
early_modern_science 239.96 213 50% 426 downrated 1
religious_translated 144.88 382 50% 764 downrated 1
cooking 74.93 822 50% 1644 downrated 1
legal_scotus 255.31 216 50% 432 downrated 1
eu_parliament_debates 198.56 302 50% 604 downrated 1
openstax_science 263.49 201 50% 402 downrated 1
openstax_society 159.56 391 50% 782 downrated 1
wpa_life_histories 89.85 603 50% 1206 downrated 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.