结婚 means "to get married." It refers to the formal union between two individuals, usually a man and a woman, recognized by law or custom.
结婚 (jiéhūn) cheat sheet for homework
婚礼 (hūnlǐ): This term means "wedding ceremony" and refers to the formal event that celebrates the marriage.
夫妻 (fūqī): 夫妻 means "husband and wife" and represents the relationship between a married couple.
离婚 (líhūn): This term means "divorce" and refers to the legal dissolution of a marriage.