reinforcing stimulus vs reinforcer

reinforcing stimulus and reinforcer both are nouns.

Word	Noun	Adjective	Verb	Adverb
reinforcing stimulus	Yes	No	No	No
reinforcer	Yes	No	No	No

As nouns, reinforcing stimulus and reinforcer are synonyms defined as:

reinforcing stimulus and reinforcer: (psychology) a stimulus that strengthens or weakens the behavior that produced it

Other synonyms of reinforcing stimulus include reinforcement.

reinforcing stimulus (noun)	reinforcer (noun)
(psychology) a stimulus that strengthens or weakens the behavior that produced it	(psychology) a stimulus that strengthens or weakens the behavior that produced it