tribune vs apse

tribune and apse both are nouns.

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

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

tribune: the apse of a Christian church that contains the bishop's throne
apse: a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar

Other hypernyms of tribune include apsis.

tribune (noun)	apse (noun)
the apse of a Christian church that contains the bishop's throne	a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
(ancient Rome) an official elected by the plebeians to protect their interests