Base Difficulty

Base difficulty: Level 1399 edit

Level distribution for noun (small_movable_object): 2: 8 19: 5 20: 1 24: 1 25: 1 27: 1 29: 11 109: 1 194: 13 195: 25 199: 23 200: 21 278: 2 405: 1 416: 1 1000: 1 1040: 8 1078: 4 1090: 2 1120: 2 1201: 3 1202: 7 1205: 8 1206: 3 1208: 4 1209: 1 1210: 1 1211: 3 1214: 1 1215: 4 1216: 2 1217: 6 1218: 1 1219: 1 1220: 3 1221: 2 1223: 3 1225: 1 1226: 1 1399: 12

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: 9077 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 2.15 8277 17% 20000 capped 2
20th_books 3.64 5172 17% 17849 downrated 2
wiki_math 22.60 1508 17% 4913 downrated 2
wiki_geography 26.04 1695 17% 5442 downrated 2
wiki_biology 4.95 4068 17% 9000 capped 1
wiki_modern_life 20.12 2138 17% 7342 downrated 2
wiki_arts 9.90 3932 17% 10000 capped 2
wiki_society 16.40 2622 17% 8491 downrated 2
wiki_linguistics 17.76 1964 17% 6877 downrated 2
wiki_physical_science 5.83 3579 17% 8000 capped 1
wiki_history 10.22 4002 17% 9000 capped 2
early_modern_science 3.34 4524 17% 10400 capped 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 4.69 3609 17% 20000 capped 1
eu_parliament_debates 18.97 1676 17% 5604 downrated 2
openstax_science 6.65 3069 17% 11000 capped 1
openstax_society 9.76 3345 17% 11000 capped 2
wpa_life_histories 1.26 7382 17% 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.