Someone who works to take into custody a fugitive or one who has jumped bail by fleeing the jurisdiction before a trial takes place: A bail recovery agent can also seek to recover the amount of bail from a fugitive fleeing from justice.

A contrast medium: A contrast agent is a liquid (usually iodine or gadolinium) that is injected into the body to make certain tissues show up clearly during diagnostic imaging (angiography, CT, myelogram, MRI).