lampshade vs protective cover

lampshade and protective cover both are nouns.

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

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

lampshade: a protective ornamental covering for a lamp, used to screen a light bulb from direct view
protective cover: a covering that is intend to protect from damage or injury

Other hypernyms of lampshade include protection, protective covering.

lampshade (noun)	protective cover (noun)
a protective ornamental covering for a lamp, used to screen a light bulb from direct view	a covering that is intend to protect from damage or injury