Base Difficulty

Base difficulty: Level 249 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: 362 (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 38.64 3852 100% 2012 2
20th_books 9.25 6648 100% 6648 1
wiki_math 278.33 702 100% 467 2
wiki_geography 2043.88 54 100% 43 3
wiki_biology 751.56 282 100% 151 2
wiki_modern_life 316.88 720 100% 435 2
wiki_arts 195.91 1090 100% 697 2
wiki_society 346.27 650 100% 375 2
wiki_linguistics 695.42 277 100% 181 2
wiki_physical_science 717.38 358 100% 183 2
wiki_history 462.80 321 100% 248 2
early_modern_science 337.54 576 100% 325 2
religious_translated 144.01 1390 100% 717 2
cooking 0.00 — — — 0
legal_scotus 7.89 7844 100% 7844 1
eu_parliament_debates 611.95 386 100% 203 2
openstax_science 878.16 248 100% 129 2
openstax_society 374.10 566 100% 373 2
wpa_life_histories 19.49 3965 100% 3965 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.