Base Difficulty

Base difficulty: Level 26 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: 359 (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 411.94 168 50% 290 downrated 2
20th_books 380.50 188 50% 315 downrated 2
wiki_math 148.98 648 50% 880 downrated 2
wiki_geography 368.78 199 50% 299 downrated 2
wiki_biology 207.82 411 50% 604 downrated 2
wiki_modern_life 288.33 219 50% 362 downrated 2
wiki_arts 274.87 230 50% 387 downrated 2
wiki_society 331.86 189 50% 308 downrated 2
wiki_linguistics 283.49 264 50% 436 downrated 2
wiki_physical_science 197.29 452 50% 694 downrated 2
wiki_history 255.42 246 50% 418 downrated 2
early_modern_science 561.74 121 50% 188 downrated 2
religious_translated 595.89 123 50% 205 downrated 2
cooking 1664.33 41 50% 80 downrated 2
legal_scotus 229.50 321 50% 533 downrated 2
eu_parliament_debates 313.36 221 50% 395 downrated 2
openstax_science 226.29 334 50% 562 downrated 2
openstax_society 263.31 311 50% 475 downrated 2
wpa_life_histories 637.72 128 50% 211 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.