physiatrics vs therapy

physiatrics and therapy both are nouns.

Word	Noun	Adjective	Verb	Adverb
physiatrics	Yes	No	No	No
therapy	Yes	No	No	No

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

physiatrics: therapy that uses physical agents: exercise and massage and other modalities
therapy: (medicine) the act of caring for someone (as by medication or remedial training etc.)

Other hypernyms of physiatrics include treatment.

physiatrics (noun)	therapy (noun)
therapy that uses physical agents: exercise and massage and other modalities	(medicine) the act of caring for someone (as by medication or remedial training etc.)