Base Difficulty

Base difficulty: Level 360 edit

Level distribution for adjective (purpose): 350: 1 360: 11 390: 1 400: 1 1000: 1 1010: 1 1020: 1 1040: 4 1060: 2 1070: 4 1078: 1 1120: 14 1399: 23

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: 2236 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr B1 (3 of 6) 4200

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 11.87 5770 100% 5770 1
20th_books 12.20 5482 100% 5482 1
wiki_math 68.14 1638 100% 1638 1
wiki_geography 0.00 — — — 0
wiki_biology 62.42 2198 100% 2198 1
wiki_modern_life 348.01 307 100% 307 1
wiki_arts 50.88 2723 100% 2723 1
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 219.88 647 100% 647 1
wiki_history 41.80 3219 100% 3219 1
early_modern_science 72.90 1585 100% 1585 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 15.38 5350 100% 5350 1
eu_parliament_debates 0.00 — — — 0
openstax_science 89.77 1537 100% 1537 1
openstax_society 0.00 — — — 0
wpa_life_histories 10.98 6096 100% 6096 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.