Base Difficulty

Base difficulty: Level 13 edit

Level distribution for noun (place_name): 13: 13

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-36 for level
Frequency and Tier Signals
Combined Frequency Rank: 174 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Movers (2 of 3) 750

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 817.33 171 100% 156 2
20th_books 768.58 185 100% 167 2
wiki_vital 516.42 271 100% 205 2
wiki_math 340.46 534 100% 418 2
wiki_geography 917.22 197 100% 118 2
wiki_biology 412.78 416 100% 299 2
wiki_modern_life 577.01 230 100% 181 2
early_modern_science 1127.80 121 100% 97 2
religious_translated 1201.56 125 100% 109 2
cooking 3354.86 41 100% 41 2
legal_scotus 466.98 314 100% 284 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.