telephoner vs telephone

telephoner and telephone both are nouns.

Word	Noun	Adjective	Verb	Adverb
telephoner	Yes	No	No	No
telephone	Yes	No	Yes	No

telephoner (noun)	telephone (noun)
the person initiating a telephone call	electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds
	transmitting speech at a distance

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