Base Difficulty

Base difficulty: Level 1399 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: 4333 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cefr A2 (2 of 6) 2100

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 3.50 5649 29% 19772 downrated 1
20th_books 3.18 5833 29% 20000 capped 1
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 53.00 956 29% 2591 downrated 2
wiki_modern_life 47.40 1099 29% 3022 downrated 2
wiki_arts 62.47 708 29% 2066 downrated 2
wiki_society 14.97 2679 29% 9376 downrated 1
wiki_linguistics 10.98 2907 29% 9000 capped 1
wiki_physical_science 54.76 1025 29% 2629 downrated 2
wiki_history 30.29 1255 29% 4392 downrated 1
early_modern_science 0.00 — — — 0
religious_translated 7.85 3176 29% 10400 capped 1
cooking 0.00 — — — 0
legal_scotus 49.83 804 29% 2519 downrated 2
eu_parliament_debates 12.26 2308 29% 8078 downrated 1
openstax_science 123.18 363 29% 1036 downrated 2
openstax_society 8.38 3961 29% 11000 capped 1
wpa_life_histories 2.48 6689 29% 20000 capped 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.