ACT - Something done, a deed.
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.
CAR - A wheeled vehicle, drawn by a horse or other animal.
CAT - Any similar animal of the family Felidae, which includes lions, tigers, bobcats, etc.
FAT - A large tub or vessel for water, wine, or other liquids; a cistern.
FIT - Suitable, proper.
RAT - A medium-sized rodent belonging to the genus Rattus.
TAR - A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
TIC - A local and habitual convulsive motion of certain muscles.
CART - A small, open, wheeled vehicle, drawn or pushed by a person or animal, more often used for transporting goods than passengers.
FACT - Action; the realm of action.
FAIR - Beautiful, of a pleasing appearance, with a pure and fresh quality.
RAFT - A flat structure made of planks, barrels etc., that floats on water, and is used for transport, emergencies or a platform for swimmers.
RIFT - A chasm or fissure.
FRAT - Shortened form for fraternity, college organization. (Often used as a noun modifier.).
RIFF - A repeated instrumental melody line in a song.
CRAFT - Strength; power; might.
TARIFF - A system of government-imposed duties levied on imported or exported goods; a list of such duties, or the duties themselves.
TRAFFIC - Pedestrians or vehicles on roads, or the flux or passage thereof.