lining vs protective covering

lining and protective covering both are nouns.

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

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

lining: a protective covering that protects an inside surface
protective covering: a covering that is intend to protect from damage or injury

Other hypernyms of lining include protection, protective cover.

lining (noun)	protective covering (noun)
the act of attaching an inside lining (to a garment or curtain etc.)	the tough natural covering of some organisms
providing something with a surface of a different material	a covering that is intend to protect from damage or injury
a protective covering that protects an inside surface
a piece of cloth that is used as the inside surface of a garment