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: 2242 (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 11.16 7130 67% 5487 2
20th_books 7.29 5866 67% 8799 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 399.56 258 67% 285 downrated 2
wiki_biology 21.89 3774 67% 5661 downrated 1
wiki_modern_life 24.33 3856 67% 5784 downrated 1
wiki_arts 20.48 4260 67% 6390 downrated 1
wiki_society 52.11 3481 67% 2633 2
wiki_linguistics 70.22 1614 67% 1693 downrated 2
wiki_physical_science 0.00 — — — 0
wiki_history 115.48 1087 67% 1145 downrated 2
early_modern_science 34.93 3260 67% 2787 2
religious_translated 52.26 2139 67% 1789 2
cooking 90.15 897 67% 1346 downrated 1
legal_scotus 20.91 5091 67% 3955 2
eu_parliament_debates 157.73 900 67% 756 2
openstax_science 26.88 4622 67% 3757 2
openstax_society 91.22 1876 67% 1503 2
wpa_life_histories 19.12 3421 67% 3823 downrated 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.