oyster plant vs salsify

oyster plant and salsify both are nouns.

Word	Noun	Adjective	Verb	Adverb
oyster plant	Yes	No	No	No
salsify	Yes	No	No	No

As nouns, salsify is a hypernym of oyster plant; that is, salsify is a word with a broader meaning than oyster plant:

As nouns, oyster plant and salsify are synonyms defined as:

oyster plant and salsify: Mediterranean biennial herb with long-stemmed heads of purple ray flowers and milky sap and long edible root; naturalized throughout United States

Other synonyms of oyster plant include Tragopogon porrifolius, vegetable oyster.

As nouns, oyster plant and salsify are synonyms defined as:

oyster plant (noun)	salsify (noun)
long white salsify	either of two long roots eaten cooked
Mediterranean biennial herb with long-stemmed heads of purple ray flowers and milky sap and long edible root; naturalized throughout United States	Mediterranean biennial herb with long-stemmed heads of purple ray flowers and milky sap and long edible root; naturalized throughout United States
edible root of the salsify plant	edible root of the salsify plant