breathe in vs respire

breathe in and respire both are verbs.

Word	Noun	Adjective	Verb	Adverb
breathe in	No	No	Yes	No
respire	No	No	Yes	No

As verbs, respire is a hypernym of breathe in; that is, respire is a word with a broader meaning than breathe in:

Other hypernyms of breathe in include breathe, suspire, take a breath.

breathe in (verb)	respire (verb)
draw in (air)	draw air into, and expel out of, the lungs
	undergo the biomedical and metabolic processes of respiration by taking up oxygen and producing carbon monoxide
	breathe easily again, as after exertion or anxiety