Difference between Earphone and Headphone

What is the difference between Earphone and Headphone?

Earphone as a noun is a transducer that converts electric signals into sound and is held near the ear, especially as part of a telephone; an earpiece or headphone. while Headphone as a noun is a listening device placed or worn in the ear, usually sold in pairs

We hope you now know whether to use Earphone or Headphone in your sentence.