ACE - A single point or spot on a playing card or die.
ARC - A directed edge.
ARE - Second-person singular simple present tense of be.
CAR - A wheeled vehicle, drawn by a horse or other animal.
EAR - The organ of hearing, consisting of the pinna, auditory canal, eardrum, malleus, incus, stapes and cochlea.
ERA - A time period of indeterminate length, generally more than one year.
CARE - Grief, sorrow.
RACE - A contest between people, animals, vehicles, etc. where the goal is to be the first to reach some objective. Several horses run in a horse race, and the first one to reach the finishing post wins.
RARE - Cooked very lightly, so the meat is still red (in the case of steak or beef in the general sense).
REAR - To raise physically; to lift up; to cause to rise, to elevate.
ACRE - A field.
CARER - Someone who looks after another, either as a job or often through family responsibilities.
RACER - Someone who takes part in a race.
CAREER - One's calling in life; a person's occupation; one's profession.