fencing sword vs epee

fencing sword and epee both are nouns.

Word	Noun	Adjective	Verb	Adverb
fencing sword	Yes	No	No	No
epee	Yes	No	No	No

As nouns, epee is a hyponym of fencing sword; that is, epee is a word with a more specific, narrower meaning than fencing sword:

Other hyponyms of fencing sword include foil, saber, sabre.

fencing sword (noun)	epee (noun)
a sword used in the sport of fencing	a fencing sword similar to a foil but with a heavier blade