Base Difficulty

Base difficulty: Level 299 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: 981 (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 13.82 6375 80% 4536 2
20th_books 21.20 4461 80% 3260 2
wiki_math 18.43 3357 80% 4196 downrated 1
wiki_geography 165.29 1106 80% 838 2
wiki_biology 45.84 2391 80% 2989 downrated 1
wiki_modern_life 118.00 1621 80% 1247 2
wiki_arts 472.35 259 80% 236 2
wiki_society 640.78 205 80% 160 2
wiki_linguistics 178.96 785 80% 724 2
wiki_physical_science 24.79 3912 80% 4890 downrated 1
wiki_history 235.05 582 80% 532 2
early_modern_science 0.00 — — — 0
religious_translated 69.92 1641 80% 1380 2
cooking 0.00 — — — 0
legal_scotus 56.97 2160 80% 1903 2
eu_parliament_debates 50.29 2716 80% 1770 2
openstax_science 0.00 — — — 0
openstax_society 168.50 1203 80% 833 2
wpa_life_histories 11.90 7440 80% 4696 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.