steel vs fencing sword

steel and fencing sword both are nouns.

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

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

steel: a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
fencing sword: a sword used in the sport of fencing

Other hyponyms of steel include backsword, broadsword, cavalry sword, saber, sabre, cutlas, cutlass, falchion, rapier, tuck.

steel (noun)	fencing sword (noun)
knife sharpener consisting of a ridged steel rod	a sword used in the sport of fencing
a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range

steel (verb)	fencing sword (verb)
cover, plate, or edge with steel
get ready for something difficult or unpleasant