telephone / telephone number

(retronym) landline (telephone connected by such a fixed cable)

mobile phone (a portable telephone)

(dated) mobile phone; cell phone (portable, wireless telephone)

phone sex (an erotic or sexual telephone conversation between two or more people)

rotary phone (telephone with a rotary dial)

Used other than figuratively or idiomatically: see telefone, sem, fio. / Chinese whispers (game where a phrase is whispered from person to person)