banquet 指正式而盛大的宴会或国宴。
feast 指筵席酒席，有时可与banquet换用，但前者强调共享欢乐的气氛。
dinner 普通用词，含义广。本义指一日的主餐，但多用于指宴请客人的正式的一餐。
party 指一般的社交聚会，也引申指宴请或宴会。
参考例句
1. The visiting professor was cocktailed,partied and dined. 为来访的教授举行了鸡尾酒会、晚会和晚宴。
2. We need a man of vision as leader of the party. 我们需要一个有远见卓识的人作党的领导人。
3. Ours is a great Party, a glorious Party, a correct Party. 我们的党是一个伟大的党，光荣的党，正确的党。
英英解释
n.
1. an organization to gain political power
2. an occasion on which people can assemble for social interaction and entertainment
3. a band of people associated temporarily in some activity
4. a group of people gathered together for pleasure
5. a person involved in legal proceedings v.
1. have or participate in a party
