cloche vs protective cover

cloche and protective cover both are nouns.

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

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

cloche: a low transparent cover put over young plants to protect them from cold
protective cover: a covering that is intend to protect from damage or injury

Other hypernyms of cloche include protection, protective covering.

cloche (noun)	protective cover (noun)
a woman's close-fitting hat that resembles a helmet	a covering that is intend to protect from damage or injury
a low transparent cover put over young plants to protect them from cold