Nightcap and Slug

Nightcap noun - An alcoholic drink taken at bedtime; often alcoholic.

Slug and nightcap are semantically related. In some cases you can use "Slug" instead a noun "Nightcap".

Slug noun - A hard strike with a part of the body or an instrument.

Nightcap and slug are semantically related. Sometimes you can use "Nightcap" instead a noun "Slug".