clover vs red clover

clover and red clover both are nouns.

Word	Noun	Adjective	Verb	Adverb
clover	Yes	No	No	No
red clover	Yes	No	No	No

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

clover: a plant of the genus Trifolium
red clover: erect to decumbent short-lived perennial having red-purple to pink flowers; the most commonly grown forage clover

clover (noun)	red clover (noun)
a plant of the genus Trifolium	erect to decumbent short-lived perennial having red-purple to pink flowers; the most commonly grown forage clover