Base Difficulty

Base difficulty: Level 162 edit

Level distribution for noun (quantitative_concept): 20: 1 26: 1 162: 20 276: 22 380: 20 390: 1 456: 1 460: 1 1000: 1 1050: 2 1070: 2 1080: 5 1090: 1 1110: 1 1120: 1 1202: 2 1203: 1 1204: 2 1206: 1 1210: 2 1211: 1 1213: 7 1218: 1 1225: 2 1226: 1 1399: 21

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: 242 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Extended (2 of 2) 1600
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 491.66 227 97% 234 downrated 1
20th_books 502.93 234 97% 241 downrated 1
wiki_math 248.72 575 97% 515 2
wiki_geography 322.79 357 97% 368 downrated 1
wiki_biology 206.53 613 97% 631 downrated 1
wiki_modern_life 277.07 400 97% 412 downrated 1
wiki_arts 242.77 472 97% 486 downrated 1
wiki_society 176.36 711 97% 732 downrated 1
wiki_linguistics 198.52 648 97% 667 downrated 1
wiki_physical_science 275.33 485 97% 500 downrated 1
wiki_history 218.60 529 97% 545 downrated 1
early_modern_science 510.67 194 97% 200 downrated 1
religious_translated 109.27 927 97% 955 downrated 1
cooking 5786.59 20 97% 20 2
legal_scotus 46.75 2413 97% 2485 downrated 1
eu_parliament_debates 109.68 1063 97% 1095 downrated 1
openstax_science 247.99 536 97% 552 downrated 1
openstax_society 196.48 697 97% 718 downrated 1
wpa_life_histories 363.15 313 97% 322 downrated 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.