dashboard vs protective cover

dashboard and protective cover both are nouns.

Word	Noun	Adjective	Verb	Adverb
dashboard	Yes	No	No	No
protective cover	Yes	No	No	No

As nouns, protective cover is a hypernym of dashboard; that is, protective cover is a word with a broader meaning than dashboard:

dashboard: protective covering consisting of a panel to protect people from the splashing water or mud etc.
protective cover: a covering that is intend to protect from damage or injury

Other hypernyms of dashboard include protection, protective covering.

dashboard (noun)	protective cover (noun)
instrument panel on an automobile or airplane containing dials and controls	a covering that is intend to protect from damage or injury
protective covering consisting of a panel to protect people from the splashing water or mud etc.