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: 507 (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 17.41 4355 100% 4355 1
20th_books 32.18 2595 100% 2595 1
wiki_math 33.49 2642 100% 2642 1
wiki_geography 1091.70 87 100% 85 2
wiki_biology 623.47 158 100% 158 1
wiki_modern_life 345.22 309 100% 309 1
wiki_arts 299.65 368 100% 368 1
wiki_society 382.00 281 100% 281 1
wiki_linguistics 408.44 301 100% 301 1
wiki_physical_science 456.33 271 100% 271 1
wiki_history 333.99 334 100% 334 1
early_modern_science 94.92 1236 100% 1236 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 102.00 1296 100% 1296 1
eu_parliament_debates 432.08 279 100% 279 1
openstax_science 275.13 491 100% 491 1
openstax_society 419.57 295 100% 280 2
wpa_life_histories 31.82 2704 100% 2704 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.