Base Difficulty

Base difficulty: Level 1218 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: 10162 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cambridge_yle Flyers (3 of 3) 1200
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 1.51 2012 3% 20000 capped 2
20th_books 2.28 1306 3% 20000 capped 2
wiki_math 0.84 2922 3% 8000 capped 1
wiki_geography 3.12 2073 3% 9000 capped 2
wiki_biology 10.19 591 3% 9000 capped 2
wiki_modern_life 8.10 688 3% 10000 capped 2
wiki_arts 14.36 242 3% 7474 downrated 2
wiki_society 5.32 1261 3% 11000 capped 2
wiki_linguistics 5.89 1074 3% 9000 capped 2
wiki_physical_science 7.87 831 3% 8000 capped 2
wiki_history 6.27 730 3% 9000 capped 2
early_modern_science 2.77 1835 3% 10400 capped 2
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 2.72 1655 3% 20000 capped 2
eu_parliament_debates 6.18 658 3% 11000 capped 2
openstax_science 8.95 782 3% 11000 capped 2
openstax_society 7.82 724 3% 11000 capped 2
wpa_life_histories 2.97 1035 3% 20000 capped 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.