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: 922 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 63.42 1450 100% 1450 1
20th_books 51.11 1736 100% 1736 1
wiki_math 127.83 1569 100% 859 2
wiki_geography 0.00 — — — 0
wiki_biology 299.04 403 100% 403 1
wiki_modern_life 425.62 262 100% 245 2
wiki_arts 64.48 2162 100% 2162 1
wiki_society 36.93 3703 100% 3703 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 348.56 441 100% 385 2
wiki_history 42.90 3155 100% 3155 1
early_modern_science 291.84 434 100% 372 2
religious_translated 64.20 1593 100% 1593 1
cooking 173.49 915 100% 627 2
legal_scotus 102.78 1282 100% 1282 1
eu_parliament_debates 33.23 2731 100% 2731 1
openstax_science 298.63 522 100% 452 2
openstax_society 65.25 2115 100% 2115 1
wpa_life_histories 34.09 2456 100% 2456 1

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.