split ticket vs ballot

split ticket and ballot both are nouns.

Word	Noun	Adjective	Verb	Adverb
split ticket	Yes	No	No	No
ballot	Yes	No	Yes	No

As nouns, ballot is a hypernym of split ticket; that is, ballot is a word with a broader meaning than split ticket:

split ticket: a ballot cast by a voter who votes for candidates from more than one party
ballot: a choice that is made by counting the number of people in favor of each alternative

Other hypernyms of split ticket include balloting, vote, voting.

split ticket (noun)	ballot (noun)
a ballot cast by a voter who votes for candidates from more than one party	a choice that is made by counting the number of people in favor of each alternative
	a document listing the alternatives that is used in voting

split ticket (verb)	ballot (verb)
	vote by ballot