agreement
Matching forms: a singular subject takes a singular verb (the dog runs), and a plural subject takes a plural verb (the dogs run).
indefinite pronoun
A pronoun that doesn't name a specific person or thing: everyone, each, nobody, both, several, some, none.
compound subject
Two or more subjects joined by and, or or nor: Ana and Leo; either the cat or the dogs.
collective noun
A noun that names a group: team, class, band, family, committee, herd.
antecedent
The noun a pronoun refers to.