shamrock vs wood sorrel

shamrock and wood sorrel both are nouns.

Word	Noun	Adjective	Verb	Adverb
shamrock	Yes	No	No	No
wood sorrel	Yes	No	No	No

As nouns, wood sorrel is a hypernym of shamrock; that is, wood sorrel is a word with a broader meaning than shamrock:

shamrock: Eurasian plant with heart-shaped trifoliate leaves and white purple-veined flowers
wood sorrel: any plant or flower of the genus Oxalis

Other hypernyms of shamrock include oxalis, sorrel.

shamrock (noun)	wood sorrel (noun)
clover native to Ireland with yellowish flowers; often considered the true or original shamrock	any plant or flower of the genus Oxalis
creeping European clover having white to pink flowers and bright green leaves; naturalized in United States; widely grown for forage
Eurasian plant with heart-shaped trifoliate leaves and white purple-veined flowers