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: 1176 (weighted harmonic mean of corpus + tier signals; lower = more common)
Tier Signals
Source Tier Rank used
basic_english Basic (1 of 2) 600
cefr A1 (1 of 6) 800

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 124.48 921 100% 738 2
20th_books 129.15 994 100% 735 2
wiki_math 83.15 1421 100% 1421 1
wiki_geography 0.00 — — — 0
wiki_biology 42.58 3127 100% 3127 1
wiki_modern_life 188.28 705 100% 705 1
wiki_arts 48.89 2819 100% 2819 1
wiki_society 184.45 909 100% 731 2
wiki_linguistics 66.10 1932 100% 1932 1
wiki_physical_science 39.66 3255 100% 3255 1
wiki_history 78.97 1715 100% 1715 1
early_modern_science 46.70 2369 100% 2369 1
religious_translated 111.49 943 100% 943 1
cooking 0.00 — — — 0
legal_scotus 6.48 8742 100% 8742 1
eu_parliament_debates 11.05 5335 100% 5335 1
openstax_science 221.10 819 100% 632 2
openstax_society 250.91 754 100% 561 2
wpa_life_histories 98.37 1252 100% 947 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.