proceed vs roar

proceed is not a noun while roar is a noun.

Word	Noun	Adjective	Verb	Adverb
proceed	No	No	Yes	No
roar	Yes	No	Yes	No

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

Other hyponyms of proceed include head, trace, limp, wander.

proceed (noun)	roar (noun)
	a very loud utterance (like the sound of an animal)
	a deep prolonged loud noise
	the sound made by a lion

proceed (verb)	roar (verb)
follow a certain course	laugh unrestrainedly and heartily
continue talking	make a loud noise, as of wind, water, or vehicles
move ahead; travel onward in time or space	emit long loud cries
follow a procedure or take a course	utter words loudly and forcefully
continue a certain state, condition, or activity	make a loud noise, as of animal
	act or proceed in a riotous, turbulent, or disorderly way