heifer

As nouns the difference between steer and heifer

is that steer is the castrated male of cattle, especially one raised for beef production or steer can be (informal) a suggestion about a course of action or steer can be (obsolete) a helmsman; a pilot while heifer is (label) a young cow, (particularly) one over one year old but which has not calved.

As a verb steer

is to castrate (a male calf) or steer can be to guide the course of a vessel, vehicle, aircraft etc (by means of a device such as a rudder, paddle, or steering wheel).

As nouns the difference between heifer and heiferette

is that heifer is a young cow, particularly one over one year old but which has not calved while heiferette is a female bovine, usually more than six months of age and less than two years of age, that has had no more than one calf.