A post defining quality, but doesn't qualify as quality.
Fear not, this is not querulously written.
1qual·i·ty
Pronunciation: \ˈkwä-lə-tē\
Function: noun
Inflected Form(s): plural qual·i·ties
Etymology: Middle English qualite, from Anglo-French qualité, from Latin qualitat-, qualitas, from qualis of what kind; akin to Latin qui who — more at who
Date: 14th century
1 a: peculiar and essential character : nature <her ethereal quality — Gay Talese> b: an inherent feature : property <had a quality of stridence, dissonance — Roald Dahl> c: capacity , role <in the quality of reader and companion — Joseph Conrad>
2 a: degree of excellence : grade <the quality of competing air service — Current Biography> b: superiority in kind <merchandise of quality>
3 a: social status : rank b: aristocracy
4 a: a distinguishing attribute : characteristic <possesses many fine qualities> barchaic : an acquired skill : accomplishment
5: the character in a logical proposition of being affirmative or negative
6: vividness of hue
7 a: timbre b: the identifying character of a vowel sound determined chiefly by the resonance of the vocal chambers in uttering it
8: the attribute of an elementary sensation that makes it fundamentally unlike any other sensation