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: 1527 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600

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 37.84 2320 100% 2320 1
20th_books 32.81 2548 100% 2548 1
wiki_math 66.98 1652 100% 1652 1
wiki_geography 96.80 1452 100% 1452 1
wiki_biology 68.91 1978 100% 1978 1
wiki_modern_life 54.32 2694 100% 2694 1
wiki_arts 149.66 881 100% 881 1
wiki_society 78.52 1788 100% 1788 1
wiki_linguistics 77.39 1654 100% 1654 1
wiki_physical_science 46.69 2861 100% 2861 1
wiki_history 115.84 1133 100% 1133 1
early_modern_science 93.40 1258 100% 1258 1
religious_translated 122.53 862 100% 862 1
cooking 536.37 288 100% 288 1
legal_scotus 39.47 2857 100% 2857 1
eu_parliament_debates 36.33 2559 100% 2559 1
openstax_science 53.61 2410 100% 2410 1
openstax_society 64.07 2135 100% 2135 1
wpa_life_histories 35.63 2479 100% 2479 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.