mouse-ear hawkweed vs hawkweed

mouse-ear hawkweed and hawkweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
mouse-ear hawkweed	Yes	No	No	No
hawkweed	Yes	No	No	No

As nouns, hawkweed is a hypernym of mouse-ear hawkweed; that is, hawkweed is a word with a broader meaning than mouse-ear hawkweed:

mouse-ear hawkweed: European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium
hawkweed: any of numerous often hairy plants of the genus Hieracium having yellow or orange flowers that resemble the dandelion

mouse-ear hawkweed (noun)	hawkweed (noun)
European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium	any of numerous often hairy plants of the genus Hieracium having yellow or orange flowers that resemble the dandelion
	any of various plants of the genus Pilosella