spar vs box

spar and box both are nouns.

Word	Noun	Adjective	Verb	Adverb
spar	Yes	No	Yes	No
box	Yes	No	Yes	No

As verbs, box is a hypernym of spar; that is, box is a word with a broader meaning than spar:

spar (noun)	box (noun)
making the motions of attack and defense with the fists and arms; a part of training for a boxer	a blow with the hand (usually on the ear)
a stout rounded pole of wood or metal used to support rigging	a (usually rectangular) container; may have a lid
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable	separate partitioned area in a public place for a few people
	private area in a theater or grandstand where a small group can watch the performance
	the driver's seat on a coach
	any one of several designated areas on a ball field where the batter or catcher or coaches are positioned
	evergreen shrubs or small trees
	the quantity contained in a box
	a rectangular drawing
	a predicament from which a skillful or graceful escape is impossible