common daisy vs daisy

common daisy and daisy both are nouns.

Word	Noun	Adjective	Verb	Adverb
common daisy	Yes	No	No	No
daisy	Yes	No	No	No

As nouns, daisy is a hypernym of common daisy; that is, daisy is a word with a broader meaning than common daisy:

common daisy: low-growing Eurasian plant with yellow central disc flowers and pinkish-white outer ray flowers
daisy: any of numerous composite plants having flower heads with well-developed ray flowers usually arranged in a single whorl

common daisy (noun)	daisy (noun)
low-growing Eurasian plant with yellow central disc flowers and pinkish-white outer ray flowers	any of numerous composite plants having flower heads with well-developed ray flowers usually arranged in a single whorl