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: 1529 (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 15.91 3423 67% 5134 downrated 1
20th_books 7.57 5745 67% 8618 downrated 1
wiki_math 0.00 — — — 0
wiki_geography 368.56 545 100% 352 3
wiki_biology 38.25 2385 67% 3578 downrated 1
wiki_modern_life 0.00 — — — 0
wiki_arts 84.24 2093 100% 1623 2
wiki_society 157.10 1429 100% 884 3
wiki_linguistics 106.05 1600 100% 1164 2
wiki_physical_science 0.00 — — — 0
wiki_history 472.99 452 100% 247 3
early_modern_science 43.03 2357 67% 2409 downrated 2
religious_translated 316.35 320 67% 336 downrated 3
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 23.00 3452 67% 5178 downrated 1
openstax_society 138.89 1814 67% 965 3
wpa_life_histories 0.00 — — — 0

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.