party vs smoker

party and smoker both are nouns.

Word	Noun	Adjective	Verb	Adverb
party	Yes	No	Yes	No
smoker	Yes	No	No	No

As nouns, smoker is a hyponym of party; that is, smoker is a word with a more specific, narrower meaning than party:

party (noun)	smoker (noun)
an occasion on which people can assemble for social interaction and entertainment	a passenger car for passengers who wish to smoke
a gathering of people for pleasure	a party for men only (or one considered suitable for men only)
an organization to gain political power	a person who smokes tobacco
a band of people associated temporarily in some activity
a person involved in legal proceedings

party (verb)	smoker (verb)
have or participate in a party