Base Difficulty

Base difficulty: Level 475 edit

Level distribution for verb (rule_defined_action): 415: 1 475: 5 485: 2 1200: 1 1202: 3 1203: 1 1204: 2 1205: 3 1206: 3 1208: 3 1211: 1 1214: 5 1220: 4 1224: 1 1226: 3 1399: 7

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: 1830 (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 90.85 1953 100% 940 3
20th_books 90.03 1552 100% 982 2
wiki_math 0.00 — — — 0
wiki_geography 94.82 1494 100% 1494 1
wiki_biology 37.16 3465 100% 3465 1
wiki_modern_life 78.36 3457 100% 1815 2
wiki_arts 31.72 4153 100% 4153 1
wiki_society 102.22 3709 100% 1323 3
wiki_linguistics 0.00 — — — 0
wiki_physical_science 0.00 — — — 0
wiki_history 120.12 1086 100% 1086 1
early_modern_science 36.45 4600 100% 2439 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 33.19 5348 100% 2179 3
eu_parliament_debates 171.15 1286 100% 623 3
openstax_science 143.80 1917 100% 884 3
openstax_society 117.40 2550 100% 1059 3
wpa_life_histories 88.06 1587 100% 1042 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.