Section Eight vs armed forces

Section Eight and armed forces both are nouns.

Word	Noun	Adjective	Verb	Adverb
Section Eight	Yes	No	No	No
armed forces	Yes	No	No	No

Section Eight (noun)	armed forces (noun)
a discharge from the US Army based on unfitness or character traits deemed undesirable	the military forces of a nation
a soldier who received a Section Eight discharge as unfit for military service