lorica vs sheath

lorica and sheath both are nouns.

Word	Noun	Adjective	Verb	Adverb
lorica	Yes	No	No	No
sheath	Yes	No	No	No

As nouns, sheath is a hypernym of lorica; that is, sheath is a word with a broader meaning than lorica:

lorica: a hard protective sheath (as secreted by certain protoctists, for example)
sheath: an enveloping structure or covering enclosing an animal or plant organ or part

Other hypernyms of lorica include case.

lorica (noun)	sheath (noun)
a hard protective sheath (as secreted by certain protoctists, for example)	a protective covering (as for a knife or sword)
	a dress suitable for formal occasions
	an enveloping structure or covering enclosing an animal or plant organ or part