Base Difficulty

Base difficulty: Level 254 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: 1691 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Movers (2 of 3) 750
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 117.83 689 80% 787 downrated 2
20th_books 108.03 843 80% 886 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 278.85 687 80% 469 2
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 46.25 2411 80% 3014 downrated 1
wiki_society 55.32 3634 80% 2450 2
wiki_linguistics 75.67 2337 80% 1569 2
wiki_physical_science 0.00 — — — 0
wiki_history 130.46 1137 80% 1014 2
early_modern_science 75.63 1580 80% 1450 2
religious_translated 47.23 2418 80% 1885 2
cooking 0.00 — — — 0
legal_scotus 4.53 9378 80% 11722 downrated 1
eu_parliament_debates 9.09 5258 80% 6572 downrated 1
openstax_science 0.00 — — — 0
openstax_society 58.86 2961 80% 2082 2
wpa_life_histories 133.37 676 80% 767 downrated 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.