Base Difficulty

Base difficulty: Level 5 edit

Level distribution for noun (family_relation): 5: 11 18: 8 102: 7 302: 10 315: 7 1002: 12 1050: 1 1120: 3 1399: 1

Per-Language Difficulty Overrides
Language Override Level Effective Level Notes Actions
Spanish Level 1002 Level 1002 -
Spanish (Latin America) Level 1002 Level 1002 -
Lithuanian Level 1002 Level 1002 -
Add Difficulty Override
-1 to exclude, 1-1399 for level
Frequency and Tier Signals
Combined Frequency Rank: 361 (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 Movers (2 of 3) 750
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 651.93 217 50% 165 8
20th_books 713.89 195 50% 157 7
wiki_math 9.82 3650 50% 7300 downrated 1
wiki_geography 39.19 3149 50% 3472 downrated 2
wiki_biology 280.17 889 50% 489 5
wiki_modern_life 342.32 827 100% 413 5
wiki_arts 278.17 523 50% 460 4
wiki_society 247.50 1072 50% 563 4
wiki_linguistics 233.51 960 50% 541 4
wiki_physical_science 114.33 1580 100% 1247 2
wiki_history 751.29 148 50% 142 5
early_modern_science 164.59 1623 50% 682 4
religious_translated 718.42 206 50% 156 7
cooking 24.79 1774 50% 3548 downrated 1
legal_scotus 342.94 846 100% 349 9
eu_parliament_debates 53.01 2537 100% 1590 3
openstax_science 199.28 1277 100% 667 4
openstax_society 647.12 351 100% 199 8
wpa_life_histories 1289.00 119 50% 97 8

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.