party vs rescue party

party and rescue party both are nouns.

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

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

party (noun)	rescue party (noun)
an occasion on which people can assemble for social interaction and entertainment	a party of rescuers
a gathering of people for pleasure
an organization to gain political power
a band of people associated temporarily in some activity
a person involved in legal proceedings

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