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: 216 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 8.18 7433 100% 7433 1
20th_books 10.31 6113 100% 6113 1
wiki_math 1129.48 163 100% 117 2
wiki_geography 3171.73 37 100% 25 2
wiki_biology 1127.88 139 100% 92 2
wiki_modern_life 890.97 203 100% 107 2
wiki_arts 333.34 637 100% 390 2
wiki_society 539.75 371 100% 215 2
wiki_linguistics 822.79 280 100% 148 2
wiki_physical_science 960.61 245 100% 127 2
wiki_history 493.81 387 100% 239 2
early_modern_science 217.56 854 100% 524 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 257.23 772 100% 507 2
eu_parliament_debates 1213.59 192 100% 104 2
openstax_science 743.92 243 100% 156 2
openstax_society 704.38 302 100% 174 2
wpa_life_histories 41.01 2536 100% 1969 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.