Straighten
Part of speech: verb
Definition: To cause to become straight. To become straight. To put in order; to sort; to tidy up. To clarify a situation or concept to (an audience). To bribe or corrupt. To stand up, especially from a sitting position.
Example sentence: I busted my nose 11 times. My fingers are all busted. My ribs. Both my arms. I can't straighten them out.
Unbend
Part of speech: verb
Definition: To free from flexure; to make, or allow to become, straight; to loosen; as, to unbend a bow.A remit from a strain or from exertion; to set at ease for a time; to relax; as, to unbend the mind from study or care.To unfasten, as sails, from the spars or stays to which they are attached for use.To cast loose or untie, as a rope.To cease to be bent; to become straight or relaxed.To relax in exertion, attention, severity, or the like; hence, to indulge in mirth or amusement.