Base Difficulty

Base difficulty: Level 1204 edit

Level distribution for noun (rule_defined_event): 405: 29 406: 1 1200: 16 1201: 15 1202: 13 1203: 8 1204: 19 1206: 17 1207: 14 1208: 1 1209: 9 1210: 10 1211: 6 1212: 12 1213: 9 1214: 9 1215: 15 1216: 2 1218: 10 1219: 3 1220: 15 1221: 6 1222: 3 1224: 3 1225: 4 1226: 1

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: 7872 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
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 2.98 926 3% 20000 capped 1
20th_books 2.84 1010 3% 20000 capped 1
wiki_math 15.23 258 3% 8000 capped 1
wiki_geography 5.66 660 3% 9000 capped 1
wiki_biology 17.38 173 3% 5940 downrated 1
wiki_modern_life 31.66 148 3% 3350 downrated 2
wiki_arts 39.31 254 3% 3209 downrated 2
wiki_society 7.95 414 3% 11000 capped 1
wiki_linguistics 15.49 230 3% 7897 downrated 1
wiki_physical_science 13.49 264 3% 8000 capped 1
wiki_history 25.57 557 3% 5078 downrated 2
early_modern_science 7.73 412 3% 10400 capped 1
religious_translated 2.90 1029 3% 10400 capped 1
cooking 1.41 1801 3% 5200 capped 1
legal_scotus 6.22 591 3% 20000 capped 1
eu_parliament_debates 9.21 394 3% 11000 capped 1
openstax_science 16.25 188 3% 6455 downrated 1
openstax_society 7.54 513 3% 11000 capped 1
wpa_life_histories 1.71 1595 3% 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.