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: 454 (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 48.83 531 10% 1798 downrated 3
20th_books 36.35 690 10% 2296 downrated 3
wiki_math 98.28 406 20% 1407 downrated 2
wiki_geography 682.17 92 10% 153 downrated 4
wiki_biology 92.91 506 10% 1429 downrated 3
wiki_modern_life 123.81 444 10% 1073 downrated 3
wiki_arts 165.95 519 10% 798 downrated 3
wiki_society 460.47 78 10% 214 downrated 3
wiki_linguistics 168.80 321 10% 762 downrated 3
wiki_physical_science 190.39 132 10% 597 downrated 3
wiki_history 377.16 132 10% 289 downrated 3
early_modern_science 69.44 187 10% 1520 downrated 2
religious_translated 96.71 307 10% 1052 downrated 3
cooking 5.97 1598 10% 5200 capped 1
legal_scotus 1786.86 56 10% 57 downrated 4
eu_parliament_debates 478.32 306 100% 253 3
openstax_science 54.94 433 10% 2445 downrated 2
openstax_society 415.76 89 10% 264 downrated 4
wpa_life_histories 170.03 529 10% 615 downrated 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.