Beekeeper is a noun. A noun is a type of word the meaning of which determines reality. Nouns provide the names for all things: people, objects, sensations, feelings, etc.

Which type of noun is beekeeper?

A person who maintains hives and keeps bees, especially for the production of honey.

Is bee a noun verb or adjective?

bee used as a noun:

A flying insect, of the order Hymenoptera, superfamily Apoidea. A contest, especially for spelling, see spelling bee. A gathering for a specific purpose, e.g. a sewing bee or a quilting bee. A ring or torque; a bracelet.