Telephone
Part of speech: verb
Definition: To contact someone by dialing his or her telephone number; to make someone's telephone ring using one's own telephone.
Part of speech: noun
Definition: An electronic device used for two-way talking with other people (often shortened to phone).
Example sentence: Gossip is nature's telephone.
Telephony
Part of speech: noun
Definition: The act of sound transmission via the electromagnetic spectrum.The study and application of telephone technology.