ARE - Second-person singular simple present tense of be.
ARK - A large box with a flat lid.
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.
RAM - A male sheep.
ERR - To make a mistake.
REM - Rapid eye movement, a sleep state.
MAKE - To behave, to act.
MARE - An adult female horse.
MARK - Boundary, land in a boundary.
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.
RAKE - A garden tool with a row of pointed teeth fixed to a long handle, used for collecting grass or debris, or for loosening soil.
MAKER - Someone who makes; a person or thing that makes or produces something.
REMARK - Act of pointing out or attentively noticing; notice or observation.