highball vs collins

highball and collins both are nouns.

Word	Noun	Adjective	Verb	Adverb
highball	Yes	No	No	No
collins	Yes	No	No	No

As nouns, collins is a hyponym of highball; that is, collins is a word with a more specific, narrower meaning than highball:

highball: a mixed drink made of alcoholic liquor mixed with water or a carbonated beverage and served in a tall glass
collins: tall iced drink of liquor (usually gin) with fruit juice

Other hyponyms of highball include cobbler, Tom Collins, gin and tonic, julep, mint julep, Scotch and soda, sling, zombi, zombie.

highball (noun)	collins (noun)
a mixed drink made of alcoholic liquor mixed with water or a carbonated beverage and served in a tall glass	tall iced drink of liquor (usually gin) with fruit juice