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: 1348 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 81.08 1403 100% 1083 2
20th_books 251.12 528 100% 405 2
wiki_math 0.00 — — — 0
wiki_geography 30.77 4298 100% 4298 1
wiki_biology 0.00 — — — 0
wiki_modern_life 33.99 4069 100% 4069 1
wiki_arts 38.62 3488 100% 3488 1
wiki_society 25.85 4893 100% 4893 1
wiki_linguistics 50.18 2381 100% 2381 1
wiki_physical_science 0.00 — — — 0
wiki_history 33.08 3968 100% 3968 1
early_modern_science 0.00 — — — 0
religious_translated 80.44 1283 100% 1283 1
cooking 0.00 — — — 0
legal_scotus 12.34 6086 100% 6086 1
eu_parliament_debates 145.36 816 100% 816 1
openstax_science 46.52 2720 100% 2720 1
openstax_society 49.15 2658 100% 2658 1
wpa_life_histories 1009.35 172 100% 117 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.