city father vs official

city father and official both are nouns.

Word	Noun	Adjective	Verb	Adverb
city father	Yes	No	No	No
official	Yes	Yes	No	No

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

Other hypernyms of city father include functionary.

city father (noun)	official (noun)
an important municipal official	someone who administers the rules of a game or sport
	a worker who holds or is invested with an office

city father (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