holdover vs official

holdover and official both are nouns.

Word	Noun	Adjective	Verb	Adverb
holdover	Yes	No	No	No
official	Yes	Yes	No	No

As nouns, official is a hypernym of holdover; that is, official is a word with a broader meaning than holdover:

Other hypernyms of holdover include functionary.

holdover (noun)	official (noun)
something that has survived from the past	someone who administers the rules of a game or sport
an official who remains in office after his term	a worker who holds or is invested with an office

holdover (adjective)	official (adjective)
	having official authority or sanction
	of or relating to an office
	verified officially
	(of a church) given official status as a national or state institution
	conforming to set usage, procedure, or discipline