plural vs rabbit ears

plural and rabbit ears both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural	Yes	Yes	No	No
rabbit ears	Yes	No	No	No

plural (noun)	rabbit ears (noun)
the form of a word that is used to denote more than one	the long ears of a rabbit
	an indoor TV antenna; consists of two extendible rods that form a V

plural (adjective)	rabbit ears (adjective)
grammatical number category referring to two or more items or units
composed of more than one member, set, or kind