Highball and Nightcap

Highball noun - A mixed drink made of alcoholic liquor mixed with water or a carbonated beverage and served in a tall glass.

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

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

Highball and nightcap are semantically related. Sometimes you can use "Highball" instead a noun "Nightcap".