Base Difficulty

Base difficulty: Level 460 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: 1342 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
cambridge_yle Movers (2 of 3) 750
cefr A1 (1 of 6) 800

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 55.52 1206 66% 1586 downrated 2
20th_books 53.13 1345 66% 1697 downrated 2
wiki_math 302.84 456 66% 447 2
wiki_geography 0.00 — — — 0
wiki_biology 335.48 468 66% 372 2
wiki_modern_life 105.96 1256 66% 1377 downrated 2
wiki_arts 57.32 2388 66% 2370 2
wiki_society 0.00 — — — 0
wiki_linguistics 127.22 1054 66% 1012 2
wiki_physical_science 167.17 973 66% 875 2
wiki_history 22.15 3931 66% 5926 downrated 1
early_modern_science 83.71 1508 66% 1364 2
religious_translated 19.13 3047 66% 4593 downrated 1
cooking 18.69 2516 66% 3793 downrated 1
legal_scotus 3.76 9342 66% 14083 downrated 1
eu_parliament_debates 0.00 — — — 0
openstax_science 223.85 834 66% 641 2
openstax_society 15.28 4736 66% 7175 downrated 1
wpa_life_histories 69.37 1105 66% 1388 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.