Base Difficulty

Base difficulty: Level 21 edit

Level distribution for noun (temporal_name): 21: 19 215: 4

Per-Language Difficulty Overrides

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

Add Difficulty Override
-1 to exclude, 1-1299 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 Flyers (3 of 3) 1200

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 23.65 3323 100% 3323 1
20th_books 18.59 3847 100% 3847 1
wiki_math 0.00 — — — 0
wiki_geography 199.52 609 100% 609 1
wiki_biology 49.24 2716 100% 2716 1
wiki_modern_life 74.51 1969 100% 1969 1
wiki_arts 110.22 1205 100% 1205 1
wiki_society 61.57 2193 100% 2193 1
wiki_linguistics 38.74 2682 100% 2682 1
wiki_physical_science 52.95 2544 100% 2544 1
wiki_history 179.20 652 100% 652 1
early_modern_science 43.35 2406 100% 2406 1
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 30.40 3290 100% 3290 1
eu_parliament_debates 90.74 1290 100% 1290 1
openstax_science 0.00 — — — 0
openstax_society 52.75 2517 100% 2517 1
wpa_life_histories 0.00 — — — 0

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.