fort vs garrison

fort and garrison both are nouns.

Word	Noun	Adjective	Verb	Adverb
fort	Yes	No	Yes	No
garrison	Yes	No	Yes	No

As nouns, fort and garrison are synonyms defined as:

fort (noun)	garrison (noun)
a fortified defensive structure	a fortified military post where troops are stationed
a fortified military post where troops are stationed	the troops who maintain and guard a fortified place

fort (verb)	garrison (verb)
station (troops) in a fort	station (troops) in a fort or garrison
enclose by or as if by a fortification
gather in, or as if in, a fort, as for protection or defense