Base Difficulty

Base difficulty: Level 39 edit

Level distribution for noun (concept_idea): 9: 5 28: 5 37: 5 39: 5 44: 5 46: 5 47: 5 48: 5 55: 27 56: 36 57: 44

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 Movers (2 of 3) 750

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 336.39 316 100% 316 1
20th_books 383.33 291 100% 291 1
wiki_math 81.29 1392 100% 1392 1
wiki_geography 36.36 3229 100% 3229 1
wiki_biology 134.64 1025 100% 1025 1
wiki_modern_life 93.13 1550 100% 1550 1
wiki_arts 131.93 982 100% 982 1
wiki_society 200.82 595 100% 595 1
wiki_linguistics 99.80 1220 100% 1220 1
wiki_physical_science 652.29 161 100% 161 1
wiki_history 118.36 1057 100% 1057 1
early_modern_science 524.77 200 100% 200 1
religious_translated 276.46 391 100% 391 1
cooking 116.70 1012 100% 1012 1
legal_scotus 651.85 153 100% 153 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.