archangel vs Gabriel

archangel and Gabriel both are nouns.

Word	Noun	Adjective	Verb	Adverb
archangel	Yes	No	No	No
Gabriel	Yes	No	No	No

As nouns, Gabriel is a hyponym of archangel; that is, Gabriel is a word with a more specific, narrower meaning than archangel:

archangel: an angel ranked above the highest rank in the celestial hierarchy
Gabriel: (Bible) the archangel who was the messenger of God

Other hyponyms of archangel include Michael, Raphael.

archangel (noun)	Gabriel (noun)
an angel ranked above the highest rank in the celestial hierarchy	(Bible) the archangel who was the messenger of God
a biennial cultivated herb; its stems are candied and eaten and its roots are used medicinally