hold over vs holdover

hold over is not a noun while holdover is a noun.

Word	Noun	Adjective	Verb	Adverb
hold over	No	No	Yes	No
holdover	Yes	No	No	No

hold over (noun)	holdover (noun)
	something that has survived from the past
	an official who remains in office after his term

hold over (verb)	holdover (verb)
intimidate somebody (with a threat)
hold over goods to be sold for the next season
keep in a position or state from an earlier period of time
continue a term of office past the normal period of time
hold back to a later time