headphone

As nouns the difference between smartphone and headphone

is that smartphone is smartphone while headphone is a listening device placed or worn in the ear, usually sold in pairs.

As nouns the difference between headphone and wireless

is that headphone is a listening device placed or worn in the ear, usually sold in pairs while wireless is (label) the medium of radio communication.

As an adjective wireless is

not having any wires.

As a verb wireless is

to send a message by wireless (by radio).

As an adverb over

is , above.

As a preposition over

is over.

As a noun headphone is

a listening device placed or worn in the ear, usually sold in pairs.

As a verb hi

is to call.

As a noun headphone is

a listening device placed or worn in the ear, usually sold in pairs.

As a verb ear

is (label) refuse, deny; repel.

As a noun headphone is

a listening device placed or worn in the ear, usually sold in pairs.

As nouns the difference between handsfree and headphone

is that handsfree is a handsfree phone while headphone is a listening device placed or worn in the ear, usually sold in pairs.

As an adjective handsfree

is that can be used without using the hands, hands-free.

As nouns the difference between headphone and homework

is that headphone is a listening device placed or worn in the ear, usually sold in pairs while homework is work that is done at home, especially school exercises set by a teacher.