howl vs roar

howl and roar both are nouns.

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

As verbs, howl and roar are synonyms defined as:

As verbs, howl and roar are synonyms defined as:

As verbs, howl and roar are synonyms defined as:

Other synonyms of howl include ululate, wail, yaup, yawl.

howl (noun)	roar (noun)
a long loud emotional utterance	a very loud utterance (like the sound of an animal)
a loud sustained noise resembling the cry of a hound	a deep prolonged loud noise
the long plaintive cry of a hound or a wolf	the sound made by a lion

howl (verb)	roar (verb)
laugh unrestrainedly and heartily	laugh unrestrainedly and heartily
make a loud noise, as of wind, water, or vehicles	make a loud noise, as of wind, water, or vehicles
emit long loud cries	emit long loud cries
cry loudly, as of animals	utter words loudly and forcefully
	make a loud noise, as of animal
	act or proceed in a riotous, turbulent, or disorderly way