Question

Is waiter a common noun

Answer 1

Common nouns are general items and are the opposite of proper nouns.
(Proper nouns are specific items that are always capitalized, e.g., Burger King)

Waiter is a common noun.

Answer 2

Waiter a a common noun. Examples of common nouns are apple, orange, and pencil. Although, if you were talking about the company Apple, it would capitalized. This is because proper nouns are names used for an individual person, company, place, organization, so forth.  A waiter would therefore not be a proper noun. Common nouns are words used to express objects or concepts, <em /><em />as waiter.