football official vs official

football official and official both are nouns.

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

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

football official (noun)	official (noun)
an official who enforces the rules at a football game	someone who administers the rules of a game or sport
	a worker who holds or is invested with an office

football official (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