reinforcement vs armed forces

reinforcement and armed forces both are nouns.

Word	Noun	Adjective	Verb	Adverb
reinforcement	Yes	No	No	No
armed forces	Yes	No	No	No

reinforcement (noun)	armed forces (noun)
an act performed to strengthen approved behavior	the military forces of a nation
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