Base Difficulty

Base difficulty: Level 290 edit

Level distribution for noun (process_event): 19: 2 20: 1 196: 26 285: 25 289: 27 290: 29 300: 1 330: 2 350: 3 360: 1 370: 1 380: 1 405: 9 450: 1 460: 1 470: 1 476: 1 1000: 2 1010: 6 1020: 6 1030: 6 1040: 12 1050: 18 1060: 5 1070: 12 1080: 1 1110: 2 1120: 10 1130: 7 1202: 1 1204: 1 1210: 1 1211: 1 1216: 1 1399: 118

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: 264 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 28.48 2948 100% 2948 1
20th_books 65.63 2004 100% 1278 2
wiki_math 619.02 318 100% 226 2
wiki_geography 177.16 970 100% 766 2
wiki_biology 464.72 304 100% 255 2
wiki_modern_life 945.50 118 100% 100 2
wiki_arts 348.21 400 100% 338 2
wiki_society 627.11 217 100% 170 2
wiki_linguistics 440.68 391 100% 292 2
wiki_physical_science 1542.70 81 100% 61 2
wiki_history 221.55 693 100% 581 2
early_modern_science 360.70 361 100% 302 2
religious_translated 21.10 3896 100% 3896 1
cooking 779.77 231 100% 198 2
legal_scotus 447.68 275 100% 256 2
eu_parliament_debates 695.77 197 100% 179 2
openstax_science 1547.28 83 100% 64 2
openstax_society 645.68 216 100% 182 2
wpa_life_histories 22.41 3546 100% 3546 1

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.