rivet vs hear

rivet is a noun but hear is not a noun.

Word	Noun	Adjective	Verb	Adverb
rivet	Yes	No	Yes	No
hear	No	No	Yes	No

As verbs, hear is a hyponym of rivet; that is, hear is a word with a more specific, narrower meaning than rivet:

Other hyponyms of rivet include absorb, engross, engulf, immerse, plunge, soak up, steep, recall, think, zoom in, listen, take heed.

rivet (noun)	hear (noun)
heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together
ornament consisting of a circular rounded protuberance (as on a vault or shield or belt)

rivet (verb)	hear (verb)
direct one's attention on something	get to know or become aware of, usually accidentally
hold (someone's attention)	perceive (sound) via the auditory sense
fasten with a rivet or rivets	receive a communication from someone
	listen and pay attention
	examine or hear (evidence or a case) by judicial process