Igniter vs Ignites - What's the difference?

As a noun igniter

is any device that is used to ignite something, especially a fuel mixture, or a charge of explosive.

(ignite).

(en noun)

Any device that is used to ignite something, especially a fuel mixture, or a charge of explosive

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(head)

(ignite)

(ignit)

to set fire to (something), to light (something)

to spark off (something), to enthuse

to commence burning.

(chemistry) To subject to the action of intense heat; to heat strongly; often said of incombustible or infusible substances.

to ignite iron or platinum