Base Difficulty

Base difficulty: Level 36 edit

Level distribution for noun (vehicle): 2: 7 36: 5 43: 21

Per-Language Difficulty Overrides

No difficulty overrides set. The base difficulty level will be used for all languages.

Add Difficulty Override
-1 to exclude, 1-100 for level
Frequency and Tier Signals
Combined Frequency Rank: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals
Source Tier Rank used
cambridge_yle Starters (1 of 3) 325

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 30.73 2682 100% 2682 1
20th_books 202.56 519 100% 519 1
wiki_math 34.84 2484 100% 2484 1
wiki_geography 81.81 1606 100% 1606 1
wiki_biology 0.00 0
wiki_modern_life 166.65 799 100% 799 1
wiki_arts 42.96 2951 100% 2951 1
wiki_society 55.93 2390 100% 2390 1
wiki_linguistics 80.29 1483 100% 1483 1
wiki_physical_science 33.67 3562 100% 3562 1
wiki_history 45.15 2789 100% 2789 1
early_modern_science 0.00 0
religious_translated 77.19 1312 100% 1312 1
cooking 48.72 1767 100% 1767 1
legal_scotus 102.64 1258 100% 1258 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.