cloche vs protective covering

cloche and protective covering both are nouns.

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

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

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

Other hypernyms of cloche include protection, protective cover.

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