callisthenics vs exercise

callisthenics and exercise both are nouns.

Word	Noun	Adjective	Verb	Adverb
callisthenics	Yes	No	No	No
exercise	Yes	No	Yes	No

As nouns, exercise is a hypernym of callisthenics; that is, exercise is a word with a broader meaning than callisthenics:

Other hypernyms of callisthenics include exercising, physical exercise, physical exertion, workout.

callisthenics (noun)	exercise (noun)
the practice of calisthenic exercises	the activity of exerting your muscles in various ways to keep fit
light exercises designed to promote general fitness	a task performed or problem solved in order to develop skill or understanding
	systematic training by multiple repetitions
	the act of using
	an action, often used negatively and without consequences
	(usually plural) a ceremony that involves processions and speeches

callisthenics (verb)	exercise (verb)
	do physical exercise
	give a workout to
	learn by repetition
	put to use
	carry out or practice; as of jobs and professions