aspect vs facet

aspect and facet both are nouns.

Word	Noun	Adjective	Verb	Adverb
aspect	Yes	No	No	No
facet	Yes	No	No	No

As nouns, aspect and facet are synonyms defined as:

aspect (noun)	facet (noun)
the feelings expressed on a person's face	a distinct feature or element in a problem
a characteristic to be considered	a smooth surface (as of a bone or cut gemstone)
a distinct feature or element in a problem
the visual percept of a region
the beginning or duration or completion or repetition of the action of a verb