census taker vs official

census taker and official both are nouns.

Word	Noun	Adjective	Verb	Adverb
census taker	Yes	No	No	No
official	Yes	Yes	No	No

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

Other hypernyms of census taker include functionary.

census taker (noun)	official (noun)
someone who collects census data by visiting individual homes	someone who administers the rules of a game or sport
	a worker who holds or is invested with an office

census taker (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