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: 1722 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 16.31 1272 17% 5482 downrated 2
20th_books 15.21 1404 17% 5952 downrated 2
wiki_math 222.32 187 17% 591 downrated 2
wiki_geography 67.02 383 17% 1865 downrated 2
wiki_biology 86.53 361 17% 1441 downrated 2
wiki_modern_life 93.93 305 17% 1196 downrated 2
wiki_arts 44.32 670 17% 2965 downrated 2
wiki_society 93.79 289 17% 1215 downrated 2
wiki_linguistics 74.16 397 17% 1734 downrated 2
wiki_physical_science 173.61 175 17% 659 downrated 2
wiki_history 65.89 391 17% 1797 downrated 2
early_modern_science 91.12 359 17% 1191 downrated 2
religious_translated 13.61 2035 17% 6954 downrated 2
cooking 37.56 873 17% 3107 downrated 2
legal_scotus 92.73 269 17% 1276 downrated 2
eu_parliament_debates 107.87 298 17% 1123 downrated 2
openstax_science 191.73 155 17% 534 downrated 2
openstax_society 118.91 214 17% 1002 downrated 2
wpa_life_histories 9.04 2249 17% 9342 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.