dolphin striker vs spar

dolphin striker and spar both are nouns.

Word	Noun	Adjective	Verb	Adverb
dolphin striker	Yes	No	No	No
spar	Yes	No	Yes	No

As nouns, spar is a hypernym of dolphin striker; that is, spar is a word with a broader meaning than dolphin striker:

dolphin striker (noun)	spar (noun)
spar under the bowsprit of a sailboat	making the motions of attack and defense with the fists and arms; a part of training for a boxer
	a stout rounded pole of wood or metal used to support rigging
	any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable