Base Difficulty

Base difficulty: Level 1020 edit

Level distribution for noun (social_institution): 299: 40 315: 1 360: 1 405: 1 1020: 2 1030: 7 1040: 1 1060: 11 1070: 7 1120: 9 1399: 25

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: 8736 (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 0.00 — — — 0
20th_books 0.00 — — — 0
wiki_math 0.00 — — — 0
wiki_geography 39.80 1582 44% 3560 downrated 1
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 13.67 4249 44% 9560 downrated 1
wiki_society 15.94 3816 44% 8586 downrated 1
wiki_linguistics 10.68 4016 44% 9000 capped 1
wiki_physical_science 0.00 — — — 0
wiki_history 0.00 — — — 0
early_modern_science 0.00 — — — 0
religious_translated 11.17 3409 44% 7670 downrated 1
cooking 0.00 — — — 0
legal_scotus 3.24 8170 44% 18382 downrated 1
eu_parliament_debates 11.28 3232 44% 7272 downrated 1
openstax_science 0.00 — — — 0
openstax_society 11.56 4340 44% 9765 downrated 1
wpa_life_histories 2.54 8870 44% 19958 downrated 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.