nosepiece vs coat of mail

nosepiece and coat of mail both are nouns.

Word	Noun	Adjective	Verb	Adverb
nosepiece	Yes	No	No	No
coat of mail	Yes	No	No	No

nosepiece (noun)	coat of mail (noun)
the link between two lenses; rests on the nose	armor that protects the wearer's whole body
armor plate that protects the nose
a strap that is the part of a bridle that goes over the animal's nose