Level of excellence.

“Quality of life is usually determined by health, education, and income.”

A property or an attribute that differentiates a thing or person.

“One of the qualities of pure iron is that it does not rust easily.”

High social position. (See also the quality.)

“A peasant is not allowed to fall in love with a lady of quality.”

Being of good worth, well made, fit for purpose.

“A quality system ensures products meet customer requirements.”