rescue vs reprieve

rescue and reprieve both are nouns.

Word	Noun	Adjective	Verb	Adverb
rescue	Yes	No	Yes	No
reprieve	Yes	No	Yes	No

As verbs, reprieve is a hyponym of rescue; that is, reprieve is a word with a more specific, narrower meaning than rescue:

Other hyponyms of rescue include relieve, salvage, salve, save.

rescue (noun)	reprieve (noun)
recovery or preservation from loss or danger	the act of reprieving; postponing or remitting punishment
	a warrant granting postponement (usually to postpone the execution of the death sentence)
	an interruption in the intensity or amount of something
	a (temporary) relief from harm or discomfort

rescue (verb)	reprieve (verb)
take forcibly from legal custody	relieve temporarily
free from harm or evil	postpone the punishment of a convicted criminal, such as an execution