Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (collection_things): 278: 1 405: 1 450: 1 460: 9 1000: 5 1010: 1 1030: 1 1050: 3 1060: 1 1078: 2 1080: 1 1120: 1 1205: 3 1211: 1 1214: 1 1220: 3 1223: 2 1399: 33

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: 1493 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 46.58 1389 10% 1910 downrated 2
20th_books 38.43 1303 10% 2215 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 75.81 1968 100% 1860 2
wiki_biology 79.86 1736 100% 1736 1
wiki_modern_life 79.09 1866 100% 1866 1
wiki_arts 42.16 2680 10% 3195 downrated 2
wiki_society 82.38 1811 100% 1707 2
wiki_linguistics 35.77 3034 100% 3034 1
wiki_physical_science 41.48 3139 100% 3139 1
wiki_history 115.60 1199 100% 1147 2
early_modern_science 69.45 1704 100% 1637 2
religious_translated 63.43 1604 100% 1604 1
cooking 33.80 2244 100% 2244 1
legal_scotus 195.83 195 10% 598 downrated 3
eu_parliament_debates 498.20 249 100% 236 3
openstax_science 88.05 2012 100% 1412 2
openstax_society 124.85 1201 100% 1131 2
wpa_life_histories 164.26 709 100% 606 3

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.