therapy vs medical aid

therapy and medical aid both are nouns.

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

As nouns, medical aid is a hypernym of therapy; that is, medical aid is a word with a broader meaning than therapy:

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

Other hypernyms of therapy include medical care.

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