These words are variously named auto-antonym, antagonym, Janus word, enantriodome, self-antonym, antilogy, or addad.
A CONTRONYM describes a word that has multiple meanings that are usually opposite in nature.
to split apart; sever; cut off OR
to adhere closely; stick together; cling to.
to secure, or fasten as with a bolt; OR
to make a sudden, swift dash, run, flight, or escape; spring away suddenly.
to desist from doing something; OR
a statement of contrition for an action; OR
a defense of an action.
to join; OR
an immobile mass of stone; OR
a shaking or unsettling movement or action.
to withstand; OR
or wear away (usually under pressure).
to hit; OR
completed; ended; OR
to end; OR
to start up.