Base Difficulty

Base difficulty: Level 24 edit

Level distribution for noun (building_part): 10: 1 19: 1 24: 16 115: 3 120: 21 1000: 2 1010: 1 1040: 2 1070: 1 1078: 2 1090: 1 1120: 1 1201: 1 1399: 6

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: 831 (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 210.95 679 94% 450 2
20th_books 319.84 488 94% 323 2
wiki_math 0.00 — — — 0
wiki_geography 147.46 1461 94% 953 2
wiki_biology 278.40 793 94% 496 2
wiki_modern_life 360.18 672 94% 365 2
wiki_arts 357.86 652 94% 358 2
wiki_society 57.07 3702 94% 2305 2
wiki_linguistics 0.00 — — — 0
wiki_physical_science 195.65 1324 94% 746 2
wiki_history 136.04 1517 94% 996 2
early_modern_science 147.15 1480 94% 793 2
religious_translated 145.21 1316 94% 713 2
cooking 0.00 — — — 0
legal_scotus 19.85 5989 94% 3562 2
eu_parliament_debates 13.92 4511 94% 4782 downrated 1
openstax_science 330.31 675 94% 429 2
openstax_society 72.08 3165 94% 1701 2
wpa_life_histories 170.07 930 94% 576 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.