Base Difficulty

Base difficulty: Level 280 edit

Level distribution for noun (physical_phenomenon): 135: 3 162: 4 179: 1 219: 1 221: 1 274: 2 275: 2 280: 1 285: 1 290: 2 300: 2 350: 1 380: 1 400: 1 440: 2 1399: 12

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: 3051 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 21.76 3688 100% 3688 1
20th_books 13.04 5227 100% 5227 1
wiki_math 26.56 3039 100% 3039 1
wiki_geography 0.00 — — — 0
wiki_biology 0.00 — — — 0
wiki_modern_life 85.45 1728 100% 1728 1
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 338.36 389 100% 389 1
wiki_history 0.00 — — — 0
early_modern_science 96.06 1221 100% 1221 1
religious_translated 14.13 5140 100% 5140 1
cooking 0.00 — — — 0
legal_scotus 21.66 4316 100% 4316 1
eu_parliament_debates 0.00 — — — 0
openstax_science 229.41 608 100% 608 1
openstax_society 0.00 — — — 0
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.