headlight

As nouns the difference between headlight and streetlight

is that headlight is a bright light, with a lens and reflector, on the front of a motor vehicle (or originally a train), designed to illuminate the road when driving at night; normally one of a pair while streetlight is any large outdoor light used to illuminate a public area, usually urban.

As nouns the difference between lantern and headlight

is that lantern is a case of translucent or transparent material made to protect a flame, or light, used to illuminate its surroundings while headlight is a bright light, with a lens and reflector, on the front of a motor vehicle (or originally a train), designed to illuminate the road when driving at night; normally one of a pair.

As a verb lantern

is to furnish with a lantern.