Base Difficulty

Base difficulty: Level 1220 edit

Level distribution for noun (symbolic_element): 330: 1 405: 1 450: 1 460: 13 1000: 3 1050: 1 1060: 1 1110: 12 1205: 5 1213: 1 1220: 1 1223: 3 1399: 16

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: 10356 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 1.91 367 1% 20000 capped 2
20th_books 1.60 429 1% 20000 capped 2
wiki_math 1.28 895 1% 8000 capped 2
wiki_geography 0.69 1183 1% 9000 capped 1
wiki_biology 1.27 783 1% 9000 capped 2
wiki_modern_life 1.71 567 1% 10000 capped 2
wiki_arts 1.23 922 1% 10000 capped 2
wiki_society 0.96 819 1% 11000 capped 1
wiki_linguistics 0.66 1183 1% 9000 capped 1
wiki_physical_science 1.16 913 1% 8000 capped 2
wiki_history 0.77 1025 1% 9000 capped 1
early_modern_science 1.17 806 1% 10400 capped 2
religious_translated 1.69 431 1% 10400 capped 2
cooking 8.12 114 1% 5200 capped 2
legal_scotus 1.47 700 1% 20000 capped 2
eu_parliament_debates 0.84 929 1% 11000 capped 2
openstax_science 1.66 687 1% 11000 capped 2
openstax_society 1.36 718 1% 11000 capped 2
wpa_life_histories 1.61 498 1% 20000 capped 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.