Base Difficulty

Base difficulty: Level 24 edit

Level distribution for noun (place_name): 1: 1 10: 1 24: 6 26: 1 114: 2 115: 2 219: 1 249: 1 255: 5 278: 3 299: 1 405: 6 406: 1 1078: 11 1203: 3 1204: 3 1207: 1 1210: 1 1212: 1 1221: 4 1222: 1 1399: 1

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: 1914 (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
cefr A1 (1 of 6) 800

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 27.98 972 17% 3353 downrated 2
20th_books 32.29 997 17% 3057 downrated 2
wiki_math 320.29 84 17% 375 downrated 2
wiki_geography 37.03 1178 17% 3727 downrated 2
wiki_biology 37.16 937 17% 3712 downrated 2
wiki_modern_life 92.42 220 17% 1113 downrated 2
wiki_arts 32.43 956 17% 4188 downrated 2
wiki_society 61.75 455 17% 1967 downrated 2
wiki_linguistics 37.44 801 17% 3492 downrated 2
wiki_physical_science 258.87 73 17% 363 downrated 2
wiki_history 42.56 680 17% 3054 downrated 2
early_modern_science 31.58 939 17% 3644 downrated 2
religious_translated 38.16 733 17% 2806 downrated 2
cooking 0.00 — — — 0
legal_scotus 9.14 2361 17% 11301 downrated 2
eu_parliament_debates 53.12 472 17% 2257 downrated 2
openstax_science 128.97 184 17% 867 downrated 2
openstax_society 42.99 789 17% 3291 downrated 2
wpa_life_histories 34.99 796 17% 2906 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.