age limit vs ordinance

age limit and ordinance both are nouns.

Word	Noun	Adjective	Verb	Adverb
age limit	Yes	No	No	No
ordinance	Yes	No	No	No

As nouns, ordinance is a hypernym of age limit; that is, ordinance is a word with a broader meaning than age limit:

age limit: regulation establishing the maximum age for doing something or holding some position
ordinance: an authoritative command

Other hypernyms of age limit include regulation.

age limit (noun)	ordinance (noun)
regulation establishing the maximum age for doing something or holding some position	the act of ordaining; the act of conferring (or receiving) holy orders
	an authoritative command
	a statute enacted by a city government