society vs smart set

society and smart set both are nouns.

Word	Noun	Adjective	Verb	Adverb
society	Yes	No	No	No
smart set	Yes	No	No	No

As nouns, society and smart set are synonyms defined as:

Other synonyms of society include beau monde, bon ton, high society.

society (noun)	smart set (noun)
an extended social group having a distinctive cultural and economic organization	the fashionable elite
a formal association of people with similar interests
the fashionable elite
the state of being with someone