nab vs ball

nab is not a noun while ball is a noun.

Word	Noun	Adjective	Verb	Adverb
nab	No	No	Yes	No
ball	Yes	No	Yes	No

nab (noun)	ball (noun)
	a pitch that is not in the strike zone
	a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs
	round object that is hit or thrown or kicked in games
	a spherical object used as a plaything
	a solid projectile that is shot by a musket
	a more or less rounded anatomical body or mass
	one of the two male reproductive glands that produce spermatozoa and secrete androgens
	a lavish dance requiring formal attire
	a compact mass
	an object with a spherical shape

nab (verb)	ball (verb)
take into custody	form into a ball by winding or rolling
seize suddenly	to live very well
tag the base runner to get him out