Bifocals and Headlight

Bifocals noun - Eyeglasses having two focal lengths, one for near vision and the other for far vision.

Headlight and bifocals are semantically related. In some cases you can use "Headlight" instead a noun "Bifocals".

Headlight noun - A powerful light with reflector; attached to the front of an automobile or locomotive.

Bifocals and headlight are semantically related. Sometimes you can use "Bifocals" instead a noun "Headlight".