medical care vs therapy

medical care and therapy both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical care	Yes	No	No	No
therapy	Yes	No	No	No

As nouns, therapy is a hyponym of medical care; that is, therapy is a word with a more specific, narrower meaning than medical care:

medical care: professional treatment for illness or injury
therapy: (medicine) the act of caring for someone (as by medication or remedial training etc.)

medical care (noun)	therapy (noun)
professional treatment for illness or injury	(medicine) the act of caring for someone (as by medication or remedial training etc.)