disobey vs balk

disobey is not a noun while balk is a noun.

Word	Noun	Adjective	Verb	Adverb
disobey	No	No	Yes	No
balk	Yes	No	Yes	No

As verbs, balk is a hyponym of disobey; that is, balk is a word with a more specific, narrower meaning than disobey:

Other hyponyms of disobey include sit in, counteract, countermine, sabotage, subvert, undermine, weaken, baulk, jib, resist.

disobey (noun)	balk (noun)
	an illegal pitching motion while runners are on base
	one of several parallel sloping beams that support a roof
	something immaterial that interferes with or delays action or progress
	the area on a billiard table behind the balkline

disobey (verb)	balk (verb)
refuse to go along with; refuse to follow; be disobedient	refuse to comply