alpine clover vs trefoil

alpine clover and trefoil both are nouns.

Word	Noun	Adjective	Verb	Adverb
alpine clover	Yes	No	No	No
trefoil	Yes	No	No	No

As nouns, trefoil is a hypernym of alpine clover; that is, trefoil is a word with a broader meaning than alpine clover:

Other hypernyms of alpine clover include clover.

alpine clover (noun)	trefoil (noun)
European mountain clover with fragrant usually pink flowers	an architectural ornament in the form of three arcs arranged in a circle
	a plant of the genus Trifolium
	any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves