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: 6933 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 5.70 5143 20% 11318 downrated 3
20th_books 3.20 6637 20% 18391 downrated 2
wiki_math 9.44 2106 20% 8000 capped 1
wiki_geography 9.90 2768 20% 9000 capped 1
wiki_biology 9.60 2820 20% 9000 capped 1
wiki_modern_life 25.40 1909 20% 5803 downrated 2
wiki_arts 14.86 1847 20% 9235 downrated 1
wiki_society 40.83 942 20% 3275 downrated 3
wiki_linguistics 23.28 1122 20% 5610 downrated 1
wiki_physical_science 10.19 2685 20% 8000 capped 1
wiki_history 34.63 911 20% 3771 downrated 2
early_modern_science 8.96 2463 20% 10400 capped 1
religious_translated 10.09 2758 20% 8499 downrated 2
cooking 0.00 — — — 0
legal_scotus 18.98 1969 20% 5611 downrated 3
eu_parliament_debates 21.36 1724 20% 4418 downrated 3
openstax_science 10.72 4055 20% 10305 downrated 2
openstax_society 32.05 1388 20% 4060 downrated 3
wpa_life_histories 2.10 5824 20% 20000 capped 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.