protective covering vs protective cover

protective covering and protective cover both are nouns.

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

As nouns, protective covering and protective cover are synonyms defined as:

protective covering and protective cover: a covering that is intend to protect from damage or injury

Other synonyms of protective covering include protection.

protective covering (noun)	protective cover (noun)
the tough natural covering of some organisms	a covering that is intend to protect from damage or injury
a covering that is intend to protect from damage or injury