Give the definitions to below term.
1 . compound antecedent the relationship between a pronoun and its antecedent
2 . elliptical clause a singular noun naming a collection or group
3 . relative clause a modifying clause whose subject and/or verb is implied
4 . collective noun two or more nouns and/or pronouns serving the samegrammatical function and followed by a pronoun that references one or all nouns
5 . reference an adjective clause introduced by a pronoun
6 . antecedent the word, phrase, or clause to which a pronoun refers