This page is about the noun "quality", which can be both countable and uncountable

quality → uncountable

Meaning: the standard of something, or how good it is

Example sentence: Products of high quality are usually more expensive than products of low quality.

quality → countable

Meaning: a particular feature of someone or something

Example sentence: Jenny's best qualities are her kindness and her willingness to help other people.

Quick Quiz:

In which sentence is the word "quality" countable?

a. Einstein's intelligence was of the highest quality.

b. Einstein's greatest quality was his intelligence.

Contributor: Matt Errey