cordless phone vs wireless

cordless phone

noun
  • A telephone unit that has a battery-powered telephone receiver/handset that uses RF signals and antennas to communicate to the wired base station instead of a cord, which is attached to a landline and functions as a charger for the receiver. 

wireless

noun
  • The medium of radio communication. 

  • Wireless connectivity to a computer network. 

verb
  • To send a message by wireless (by radio) 

adj
  • Not having any wires. 

  • Of or relating to communication without a wired connection, such as by radio waves. 

How often have the words cordless phone and wireless occurred in a corpus of books? (source: Google Ngram Viewer )