Base Difficulty

Base difficulty: Level 1 edit

Level distribution for noun (building_structure): 1: 9 10: 6 20: 7 24: 9 26: 7 110: 4 114: 24 115: 12 120: 1 278: 4 380: 1 405: 3 1000: 2 1010: 1 1040: 8 1050: 1 1078: 4 1120: 1 1209: 1 1218: 1 1221: 1 1225: 1 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: 2359 (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 42.45 2087 100% 2087 1
20th_books 42.06 2050 100% 2050 1
wiki_math 36.85 3675 100% 1887 2
wiki_geography 140.51 1459 100% 991 2
wiki_biology 0.00 — — — 0
wiki_modern_life 32.71 4221 100% 4221 1
wiki_arts 205.54 851 100% 648 2
wiki_society 211.37 1149 100% 663 2
wiki_linguistics 45.38 2577 100% 2577 1
wiki_physical_science 0.00 — — — 0
wiki_history 56.98 2401 100% 2401 1
early_modern_science 0.00 — — — 0
religious_translated 0.00 — — — 0
cooking 0.00 — — — 0
legal_scotus 45.93 3119 100% 2110 2
eu_parliament_debates 0.00 — — — 0
openstax_science 64.79 2053 100% 2053 1
openstax_society 0.00 — — — 0
wpa_life_histories 33.63 2775 100% 2135 2

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.