Base Difficulty

Base difficulty: Level 170 edit

Level distribution for noun (plant_part): 28: 3 170: 13 278: 1 1010: 5 1078: 3 1090: 5 1210: 2 1399: 3

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: 884 (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 Starters (1 of 3) 325
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 110.52 942 80% 841 2
20th_books 169.78 795 80% 578 2
wiki_math 0.00 — — — 0
wiki_geography 0.00 — — — 0
wiki_biology 788.75 159 80% 132 2
wiki_modern_life 23.73 4537 80% 5705 downrated 1
wiki_arts 51.49 4086 80% 2569 2
wiki_society 18.00 5423 80% 6819 downrated 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 83.44 1998 80% 1640 2
wiki_history 0.00 — — — 0
early_modern_science 140.70 968 80% 817 2
religious_translated 121.14 1203 80% 848 2
cooking 98.57 1446 80% 974 2
legal_scotus 0.00 — — — 0
eu_parliament_debates 0.00 — — — 0
openstax_science 127.24 1569 80% 1078 2
openstax_society 0.00 — — — 0
wpa_life_histories 115.29 889 80% 852 2

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.