reinforcement vs approving

reinforcement and approving both are nouns.

Word	Noun	Adjective	Verb	Adverb
reinforcement	Yes	No	No	No
approving	Yes	Yes	No	No

As nouns, approving is a hypernym of reinforcement; that is, approving is a word with a broader meaning than reinforcement:

Other hypernyms of reinforcement include approval, blessing.

reinforcement (noun)	approving (noun)
an act performed to strengthen approved behavior	the formal act of approving
a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission
a device designed to provide additional strength
(psychology) a stimulus that strengthens or weakens the behavior that produced it
information that makes more forcible or convincing

reinforcement (adjective)	approving (adjective)
	expressing or manifesting praise or approval