Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for verb (social_interaction): 1399: 21

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: 3064 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B2 (4 of 6) 6900

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 30.08 2266 44% 2774 downrated 3
20th_books 31.17 1934 44% 2619 downrated 3
wiki_math 43.18 1490 44% 2497 downrated 2
wiki_geography 0.00 — — — 0
wiki_biology 68.90 1211 44% 2013 downrated 2
wiki_modern_life 45.41 1827 44% 3212 downrated 2
wiki_arts 18.04 3334 44% 7502 downrated 1
wiki_society 56.11 1837 44% 2435 downrated 3
wiki_linguistics 44.02 1658 44% 2802 downrated 2
wiki_physical_science 67.17 1563 44% 2040 downrated 3
wiki_history 26.15 2326 44% 5234 downrated 1
early_modern_science 29.29 2142 44% 3651 downrated 2
religious_translated 33.00 1966 44% 2911 downrated 2
cooking 15.02 2269 44% 5105 downrated 1
legal_scotus 104.16 1079 44% 1189 downrated 4
eu_parliament_debates 37.53 1927 44% 2445 downrated 3
openstax_science 87.48 1256 29% 1546 downrated 3
openstax_society 57.89 1939 44% 2262 downrated 3
wpa_life_histories 37.22 1758 29% 2314 downrated 3

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.