phone vs mouthpiece

phone and mouthpiece both are nouns.

Word	Noun	Adjective	Verb	Adverb
phone	Yes	No	Yes	No
mouthpiece	Yes	No	No	No

phone (noun)	mouthpiece (noun)
electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds	the aperture of a wind instrument into which the player blows directly
electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear	the tube of a pipe or cigarette holder that a smoker holds in the mouth
(phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language	an acoustic device; the part of a telephone into which a person speaks
	(especially boxing) equipment that protects an athlete's mouth
	a part that goes over or into the mouth of a person
	a spokesperson (as a lawyer)

phone (verb)	mouthpiece (verb)
get or try to get into communication (with someone) by telephone