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

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: 952 (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 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 195.66 646 100% 479 3
20th_books 150.17 807 100% 613 3
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 0.00 — — — 0
wiki_arts 112.26 1225 100% 1225 1
wiki_society 59.08 2361 100% 2361 1
wiki_linguistics 50.18 2374 100% 2374 1
wiki_physical_science 59.97 2348 100% 2348 1
wiki_history 440.21 287 100% 248 2
early_modern_science 0.00 — — — 0
religious_translated 352.91 437 100% 306 2
cooking 0.00 — — — 0
legal_scotus 25.09 4604 100% 3096 2
eu_parliament_debates 0.00 — — — 0
openstax_science 72.68 1871 100% 1871 1
openstax_society 73.10 2634 100% 1682 2
wpa_life_histories 265.61 521 100% 385 3

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.