party

An organization to gain political power.

“in 1992 Perot tried to organize a third party at the national level”

A band of people associated temporarily in some activity.

“they organized a party to search for food”

A group of people gathered together for pleasure.

“she joined the party after dinner”

An occasion on which people can assemble for social interaction and entertainment.

“he planned a party to celebrate Bastille Day”

A person involved in legal proceedings.

“the party of the first part”

Have or participate in a party.

“The students were partying all night before the exam”