lesser yellow trefoil vs clover

lesser yellow trefoil and clover both are nouns.

Word	Noun	Adjective	Verb	Adverb
lesser yellow trefoil	Yes	No	No	No
clover	Yes	No	No	No

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

lesser yellow trefoil: clover native to Ireland with yellowish flowers; often considered the true or original shamrock
clover: a plant of the genus Trifolium

Other hypernyms of lesser yellow trefoil include trefoil.

lesser yellow trefoil (noun)	clover (noun)
clover native to Ireland with yellowish flowers; often considered the true or original shamrock	a plant of the genus Trifolium