ACE - A single point or spot on a playing card or die.
AIR - The atmospheric substance above the surface of the earth which animals breathe, formerly considered to be a single substance, one of the four basic elements of ancient philosophy and one of the five basic elements of Eastern traditions.
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.
ICE - Water in frozen (solid) form.
IRE - Iron.
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.
RICE - Cereal plants (Oryza sativa) of the grass family whose seeds are used as food.
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.
RARER - Comparative form of rare: more rare.
CRIER - One who cries.
CARRIER - A person or object that carries someone or something else.