rescuer vs saver

rescuer and saver both are nouns.

Word	Noun	Adjective	Verb	Adverb
rescuer	Yes	No	No	No
saver	Yes	No	No	No

As nouns, rescuer and saver are synonyms defined as:

Other synonyms of rescuer include recoverer.

rescuer (noun)	saver (noun)
someone who saves something from danger or violence	someone who saves (especially money)
a person who rescues you from harm or danger	someone who saves something from danger or violence