Blackhead and Whiteheads

Blackhead noun - A black-tipped plug clogging a pore of the skin.

Whiteheads and blackhead are semantically related in blemishes topic. In some cases you can use "Whiteheads" instead a noun "Blackhead".

Blackhead and whiteheads are semantically related in pimple topic. Sometimes you can use "Blackhead" instead a noun "Whiteheads", if it concerns topics such as flaw, small swelling on the skin.