sobersides vs actor

sobersides and actor both are nouns.

Word	Noun	Adjective	Verb	Adverb
sobersides	Yes	No	No	No
actor	Yes	No	No	No

As nouns, actor is a hypernym of sobersides; that is, actor is a word with a broader meaning than sobersides:

Other hypernyms of sobersides include doer, worker.

sobersides (noun)	actor (noun)
a serious and sedate individual	a theatrical performer
	a person who acts and gets things done