Base Difficulty

Base difficulty: Level 20 edit

Level distribution for noun (means_of_payment): 20: 5 184: 1 1399: 3

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: 2360 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A1 (1 of 6) 800

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 25.38 498 11% 3877 downrated 2
20th_books 21.24 619 11% 4727 downrated 2
wiki_math 58.64 376 11% 2373 downrated 2
wiki_geography 29.43 942 11% 4635 downrated 2
wiki_biology 46.26 557 11% 2852 downrated 2
wiki_modern_life 55.34 460 11% 2156 downrated 2
wiki_arts 45.55 589 11% 2771 downrated 2
wiki_society 54.76 378 11% 2167 downrated 2
wiki_linguistics 113.75 218 11% 1062 downrated 2
wiki_physical_science 117.67 185 11% 968 downrated 2
wiki_history 29.37 813 11% 4438 downrated 2
early_modern_science 66.32 330 11% 1631 downrated 2
religious_translated 22.07 688 11% 4735 downrated 2
cooking 12.27 1320 11% 5200 capped 2
legal_scotus 40.54 479 11% 3137 downrated 2
eu_parliament_debates 52.74 438 11% 2313 downrated 2
openstax_science 154.00 128 11% 633 downrated 2
openstax_society 122.86 175 11% 922 downrated 2
wpa_life_histories 17.80 800 11% 5567 downrated 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.