Base Difficulty

Base difficulty: Level 1 edit

Level distribution for noun (building_structure): 1: 10 10: 8 20: 7 24: 20 26: 8 110: 4 114: 26 115: 19 380: 1 405: 3 1000: 2 1010: 1 1040: 8 1050: 1 1120: 1 1209: 1 1218: 1 1221: 1 1225: 1

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 Starters (1 of 3) 325

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 30.99 2669 100% 2669 1
20th_books 59.19 1494 100% 1494 1
wiki_math 22.10 3367 100% 3367 1
wiki_geography 0.00 — — — 0
wiki_biology 65.54 2068 100% 2068 1
wiki_modern_life 107.22 1357 100% 1357 1
wiki_arts 30.62 3977 100% 3977 1
wiki_society 40.98 3237 100% 3237 1
wiki_linguistics 25.82 3617 100% 3617 1
wiki_physical_science 0.00 — — — 0
wiki_history 0.00 — — — 0
early_modern_science 29.92 3196 100% 3196 1
religious_translated 34.26 2610 100% 2610 1
cooking 60.05 1589 100% 1589 1
legal_scotus 26.23 3639 100% 3639 1
eu_parliament_debates 12.16 4665 100% 4665 1
openstax_science 107.44 1294 100% 1294 1
openstax_society 60.16 2261 100% 2261 1
wpa_life_histories 412.70 287 100% 287 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.