butt shaft vs arrow

butt shaft and arrow both are nouns.

Word	Noun	Adjective	Verb	Adverb
butt shaft	Yes	No	No	No
arrow	Yes	No	No	No

As nouns, arrow is a hypernym of butt shaft; that is, arrow is a word with a broader meaning than butt shaft:

butt shaft: a blunt arrow without a barb; an arrow used for target practice
arrow: a projectile with a straight thin shaft and an arrowhead on one end and stabilizing vanes on the other; intended to be shot from a bow

butt shaft (noun)	arrow (noun)
a blunt arrow without a barb; an arrow used for target practice	a projectile with a straight thin shaft and an arrowhead on one end and stabilizing vanes on the other; intended to be shot from a bow
	a mark to indicate a direction or relation