Base Difficulty

Base difficulty: Level 195 edit

Level distribution for noun (machine_part): 185: 4 195: 3 199: 3 200: 1 204: 1 205: 5 330: 1 1078: 2 1399: 13

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: 4915 (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 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 22.82 877 19% 4026 downrated 2
20th_books 26.05 785 19% 3658 downrated 2
wiki_math 0.00 — — — 0
wiki_geography 25.03 1513 19% 5593 downrated 2
wiki_biology 42.39 588 19% 3058 downrated 1
wiki_modern_life 38.31 893 19% 3647 downrated 2
wiki_arts 7.88 3310 19% 10000 capped 1
wiki_society 7.41 3571 19% 11000 capped 1
wiki_linguistics 0.00 — — — 0
wiki_physical_science 41.61 1047 19% 3512 downrated 2
wiki_history 14.13 1855 19% 9000 capped 1
early_modern_science 34.61 925 19% 3313 downrated 2
religious_translated 31.31 959 19% 3268 downrated 2
cooking 17.12 1240 19% 5200 capped 1
legal_scotus 1.09 9369 19% 20000 capped 1
eu_parliament_debates 5.25 3123 19% 11000 capped 1
openstax_science 11.99 2138 19% 11000 capped 1
openstax_society 5.01 4371 19% 11000 capped 1
wpa_life_histories 42.32 563 19% 2449 downrated 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.