exercise / exorcise [ˈɛksɜrsaiz]
exercise – n. & v. – n. – 1. an act of employing or putting into play, use; 2. the discharge of a duty, function or office; 3. activity that requires physical or mental exertion, especially when performed to develop or maintain fitness; 4. a task, problem or other effort performed to develop or maintain fitness or increase skill; v. – 1. to put into play, operation; 2. to bring to bear, exert; 3. to subject to practise or exertion in order to train, strengthen or develop; 4. to carry out the functions of; 5. to absorb the attentions of, especially by worry or anxiety
exorcise – v. tr. – 1. to drive away (an evil spirit) by the invocation or use of some holy name; 2. to clear (a person or place) of evil spirits; to purify or set free from malignant influences