Base Difficulty

Base difficulty: Level 1210 edit

Level distribution for noun (spatial_division): 249: 11 254: 2 350: 1 460: 1 1078: 1 1200: 4 1201: 1 1202: 3 1203: 2 1204: 9 1206: 3 1207: 4 1208: 1 1209: 5 1210: 4 1211: 4 1212: 1 1213: 1 1217: 2 1219: 1 1220: 1 1226: 5 1399: 9

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: 7114 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
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 4.39 648 3% 20000 capped 1
20th_books 8.07 374 3% 12841 downrated 1
wiki_math 0.70 3210 3% 8000 capped 1
wiki_geography 3.39 1187 3% 9000 capped 1
wiki_biology 70.63 190 3% 1798 downrated 2
wiki_modern_life 3.31 1289 3% 10000 capped 1
wiki_arts 1.48 2723 3% 10000 capped 1
wiki_society 1.94 2088 3% 11000 capped 1
wiki_linguistics 0.89 3425 3% 9000 capped 1
wiki_physical_science 7.13 567 3% 8000 capped 1
wiki_history 0.00 — — — 0
early_modern_science 7.62 415 3% 10400 capped 1
religious_translated 1.14 2387 3% 10400 capped 1
cooking 65.50 171 3% 1549 downrated 2
legal_scotus 0.17 9314 3% 20000 capped 1
eu_parliament_debates 1.23 2332 3% 11000 capped 1
openstax_science 4.74 880 3% 11000 capped 1
openstax_society 1.05 3368 3% 11000 capped 1
wpa_life_histories 14.80 743 3% 4670 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.