Base Difficulty

Base difficulty: Level 162 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: 127 (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 Starters (1 of 3) 325
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 500.88 251 100% 218 2
20th_books 452.82 277 100% 243 2
wiki_math 793.49 211 100% 165 2
wiki_geography 2038.94 52 100% 42 2
wiki_biology 1284.62 131 100% 79 2
wiki_modern_life 1124.43 126 100% 83 2
wiki_arts 1294.78 95 100% 71 2
wiki_society 1009.17 114 100% 93 2
wiki_linguistics 1230.06 157 100% 99 2
wiki_physical_science 902.50 198 100% 132 2
wiki_history 990.70 120 100% 99 2
early_modern_science 2024.28 85 100% 51 2
religious_translated 678.94 235 100% 173 2
cooking 717.61 306 100% 206 2
legal_scotus 906.62 123 100% 117 2
eu_parliament_debates 910.91 148 100% 129 2
openstax_science 829.84 177 100% 134 2
openstax_society 849.96 174 100% 139 2
wpa_life_histories 588.41 240 100% 199 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.