The difference between Breeder and Hetero

When used as nouns, breeder means a person who breeds plants or animals professionally, whereas hetero means a heterosexual person.

Hetero is also adjective with the meaning: heterosexual: of, pertaining to, or being a heterosexual person.

check bellow for the other definitions of Breeder and Hetero

Breeder as a noun:

A person who breeds plants or animals professionally.
Breeder as a noun (slang, derogatory):

A person who has had or who is capable of having children; a person who is focussed on the rearing of their own children.
Breeder as a noun (gay slang, derogatory):

A heterosexual; i.e. one whose sexual intercourse can lead to breeding.

Examples:

"Since the breeders started coming here, you can never tell who likes cock."
Breeder as a noun:

A type of nuclear reactor that creates material suitable for the production of atomic weapons. (See Wikipedia's article on fast breeder reactors.)
Breeder as a noun (cellular automata):

A pattern that exhibits quadratic growth by generating multiple copies of a secondary pattern, each of which then generates multiple copies of a tertiary pattern.

Hetero as an adjective (informal):

Heterosexual: of, pertaining to, or being a heterosexual person.

Examples:

"This novel depicts a hetero couple who are in love."