Abstract noun: names an idea or concept.

Concrete noun: names a physical object.

Common noun: refers to a person, place, or thing without giving it a specific, capitalized name.

Proper noun: gives the specific, capitalized name of person, place, or thing.

Countable noun: has both a singular and plural form, and refers to people or objects that can be counted.

Noncountable noun: does not have a plural form, and refers to something that cannot be counted.

Collective noun: names a group of people or things. A collective noun takes a singular verb even though it names a group of people or things.

Gendered noun: takes a different form depending on the gender of the person to whom it refers. Gendered nouns usually refer to particular occupations.

Appositive: explains the noun or noun phrase that directly precedes it. In the following sentence, the grouch is an appositive describing my father.

Gerund: a noun formed by adding -ing to a verb.

Infinitive: a noun formed by a verb and the word to.