* Noun: This is the most common usage. "Qualities" refers to the attributes or characteristics of something.
* Adjective: Less common, but possible. "Qualities" can act as an adjective to describe something that has good qualities. For example, "She has qualities of leadership."
* Plural noun: It's important to note that "qualities" is the plural form of "quality."
Examples:
* Noun: "The qualities of a good leader include honesty, integrity, and compassion."
* Adjective: "The qualities furniture was very expensive."
To determine the part of speech, you need to look at the context in which the word is used.