Base Difficulty

Base difficulty: Level 1205 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: 6893 (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 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 44.34 134 3% 2749 downrated 2
20th_books 40.30 164 3% 3148 downrated 2
wiki_math 6.71 666 3% 8000 capped 2
wiki_geography 3.39 2118 3% 9000 capped 2
wiki_biology 5.10 1122 3% 9000 capped 2
wiki_modern_life 16.54 209 3% 6164 downrated 2
wiki_arts 12.10 351 3% 9514 downrated 2
wiki_society 8.65 585 3% 11000 capped 2
wiki_linguistics 8.19 546 3% 9000 capped 2
wiki_physical_science 3.49 1227 3% 8000 capped 1
wiki_history 8.11 749 3% 9000 capped 2
early_modern_science 14.63 325 3% 7408 downrated 2
religious_translated 29.03 209 3% 4121 downrated 2
cooking 10.24 672 3% 5200 capped 2
legal_scotus 5.79 853 3% 20000 capped 2
eu_parliament_debates 11.03 392 3% 11000 capped 2
openstax_science 7.16 724 3% 11000 capped 2
openstax_society 8.96 694 3% 11000 capped 2
wpa_life_histories 22.62 285 3% 5213 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.