English definition of “quality”
GOOD OR BAD [U] › how good or bad something is: good/high quality poor/low quality The air quality in this area is terrible. All we are asking for is a decent quality of life. The spokeswoman says a quality control system is being developed for next year.
GOOD [U] › when something is very good or well made: A designer label isn't necessarily a guarantee of quality.
CHARACTER [C] › part of the character or personality of someone or something: leadership qualities Joe has a lot of good qualities, but I don't think he has the ability to discipline the team.