Base Difficulty

Base difficulty: Level 135 edit

Level distribution for noun (natural_feature): 10: 2 11: 1 135: 25 165: 1 219: 26 254: 1 330: 1 1010: 1 1020: 7 1050: 9 1221: 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: — (run python -m storage.admin --calc-ranks to populate)
Tier Signals

No lemma-tier assignment found yet.

Corpus Frequency
Corpus Freq (per M) Best form Share Zipf rank Forms
19th_books 51.29 1769 100% 1769 1
20th_books 19.35 3930 100% 3930 1
wiki_math 0.00 — — — 0
wiki_geography 139.04 978 100% 978 1
wiki_biology 128.57 1103 100% 1103 1
wiki_modern_life 54.51 2690 100% 2690 1
wiki_arts 0.00 — — — 0
wiki_society 0.00 — — — 0
wiki_linguistics 0.00 — — — 0
wiki_physical_science 370.05 352 100% 352 1
wiki_history 0.00 — — — 0
early_modern_science 0.00 — — — 0
religious_translated 78.90 1312 100% 1312 1
cooking 0.00 — — — 0
legal_scotus 5.87 9176 100% 9176 1
eu_parliament_debates 0.00 — — — 0
openstax_science 94.70 1455 100% 1455 1
openstax_society 21.89 4911 100% 4911 1
wpa_life_histories 29.51 2688 100% 2688 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.