Base Difficulty

Base difficulty: Level 265 edit

Level distribution for noun (mental_construct): 265: 27 300: 1 390: 2 460: 1 1060: 6 1070: 1 1120: 1 1399: 30

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: 985 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A2 (2 of 6) 2100

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 99.45 556 44% 975 downrated 2
20th_books 76.84 698 44% 1266 downrated 2
wiki_math 80.07 753 44% 1694 downrated 1
wiki_geography 64.49 1517 44% 2172 downrated 2
wiki_biology 25.98 2341 44% 5267 downrated 1
wiki_modern_life 58.78 1090 44% 2452 downrated 1
wiki_arts 105.72 621 44% 1212 downrated 2
wiki_society 194.85 366 44% 609 downrated 2
wiki_linguistics 32.25 1756 44% 3951 downrated 1
wiki_physical_science 48.08 1356 44% 3051 downrated 1
wiki_history 151.53 461 44% 784 downrated 2
early_modern_science 68.85 722 44% 1624 downrated 1
religious_translated 9.64 3818 44% 8590 downrated 1
cooking 0.00 — — — 0
legal_scotus 576.84 118 44% 193 downrated 2
eu_parliament_debates 264.89 406 44% 466 downrated 2
openstax_science 51.53 1217 44% 2738 downrated 1
openstax_society 309.20 263 44% 389 downrated 2
wpa_life_histories 83.66 707 44% 1220 downrated 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.