Base Difficulty

Base difficulty: Level 276 edit

Level distribution for noun (quantitative_concept): 20: 1 26: 1 162: 20 276: 22 380: 20 390: 1 456: 1 460: 1 1000: 1 1050: 2 1070: 2 1080: 5 1090: 1 1110: 1 1120: 1 1202: 2 1203: 1 1204: 2 1206: 1 1210: 2 1211: 1 1213: 7 1218: 1 1225: 2 1226: 1 1399: 21

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: 1026 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr B1 (3 of 6) 4200

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 212.27 335 67% 483 downrated 2
20th_books 170.50 418 67% 592 downrated 2
wiki_math 19.96 2852 67% 4278 downrated 1
wiki_geography 137.74 612 67% 918 downrated 1
wiki_biology 106.25 850 67% 1275 downrated 1
wiki_modern_life 80.95 1194 67% 1791 downrated 1
wiki_arts 85.75 1055 67% 1583 downrated 1
wiki_society 63.07 1508 67% 2262 downrated 1
wiki_linguistics 77.23 1131 67% 1696 downrated 1
wiki_physical_science 126.10 764 67% 1146 downrated 1
wiki_history 110.36 788 67% 1182 downrated 1
early_modern_science 180.14 441 67% 597 downrated 2
religious_translated 303.86 277 67% 375 downrated 2
cooking 127.68 676 67% 1014 downrated 1
legal_scotus 111.68 1525 67% 1155 2
eu_parliament_debates 65.83 1198 67% 1797 downrated 1
openstax_science 117.40 814 67% 1221 downrated 1
openstax_society 80.40 1179 67% 1769 downrated 1
wpa_life_histories 200.56 385 67% 546 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.