Base Difficulty

Base difficulty: Level 4 edit

Level distribution for numeral (cardinal): 4: 31 490: 72

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: 1100 (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 257.92 436 100% 389 2
20th_books 252.20 461 100% 407 2
wiki_math 40.42 2345 100% 2345 1
wiki_geography 69.02 2026 100% 2026 1
wiki_biology 49.79 2722 100% 2722 1
wiki_modern_life 44.44 3246 100% 3246 1
wiki_arts 58.81 2353 100% 2353 1
wiki_society 38.02 3605 100% 3605 1
wiki_linguistics 50.52 2373 100% 2373 1
wiki_physical_science 63.51 2235 100% 2235 1
wiki_history 70.56 1953 100% 1953 1
early_modern_science 364.12 364 100% 301 2
religious_translated 455.46 273 100% 252 2
cooking 0.00 — — — 0
legal_scotus 17.00 6290 100% 3812 2
eu_parliament_debates 20.61 3687 100% 3687 1
openstax_science 39.48 3101 100% 3101 1
openstax_society 157.08 1160 100% 873 2
wpa_life_histories 305.64 424 100% 351 2

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.