nomad vs rover

nomad and rover both are nouns.

Word	Noun	Adjective	Verb	Adverb
nomad	Yes	No	No	No
rover	Yes	No	No	No

As nouns, rover is a hypernym of nomad; that is, rover is a word with a broader meaning than nomad:

nomad: a member of a people who have no permanent home but move about according to the seasons
rover: someone who leads a wandering unsettled life

Other hypernyms of nomad include bird of passage, roamer, wanderer.

nomad (noun)	rover (noun)
a member of a people who have no permanent home but move about according to the seasons	someone who leads a wandering unsettled life
	an adult member of the Boy Scouts movement