Base Difficulty

Base difficulty: Level 27 edit

Level distribution for adjective (color): 3: 8 27: 3 1120: 2

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: 2208 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325
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 30.20 2814 100% 2814 1
20th_books 54.27 1665 100% 1665 1
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 133.14 1055 100% 1055 1
wiki_modern_life 0.00 — — — 0
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 67.52 2122 100% 2122 1
wiki_history 0.00 — — — 0
early_modern_science 67.20 1709 100% 1709 1
religious_translated 22.84 3681 100% 3681 1
cooking 0.00 — — — 0
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 30.34 3798 100% 3798 1
openstax_society 0.00 — — — 0
wpa_life_histories 11.65 5874 100% 5874 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.