tribune vs guardian

tribune and guardian both are nouns.

Word	Noun	Adjective	Verb	Adverb
tribune	Yes	No	No	No
guardian	Yes	No	No	No

As nouns, guardian is a hypernym of tribune; that is, guardian is a word with a broader meaning than tribune:

tribune: (ancient Rome) an official elected by the plebeians to protect their interests
guardian: a person who cares for persons or property

Other hypernyms of tribune include defender, protector, shielder.

tribune (noun)	guardian (noun)
the apse of a Christian church that contains the bishop's throne	a person who cares for persons or property
(ancient Rome) an official elected by the plebeians to protect their interests