Base Difficulty

Base difficulty: Level 254 edit

Level distribution for noun (geographic_place): 26: 5 249: 5 254: 17 350: 1 420: 1 1010: 1 1020: 7 1030: 1 1050: 1 1060: 1 1120: 2 1399: 18

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: 741 (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 14.24 4276 80% 5345 downrated 1
20th_books 20.53 4306 80% 3322 2
wiki_math 0.00 — — — 0
wiki_geography 983.53 256 80% 114 3
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 0.00 — — — 0
wiki_society 46.12 4559 80% 2744 2
wiki_linguistics 120.60 1940 80% 976 3
wiki_physical_science 0.00 — — — 0
wiki_history 80.50 2320 80% 1669 2
early_modern_science 95.98 1419 80% 1181 2
religious_translated 14.09 4420 80% 5525 downrated 1
cooking 0.00 — — — 0
legal_scotus 1668.55 92 100% 65 4
eu_parliament_debates 0.00 — — — 0
openstax_science 0.00 — — — 0
openstax_society 125.99 1924 80% 1034 3
wpa_life_histories 191.85 647 80% 524 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.