stitchwort vs chickweed

stitchwort and chickweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
stitchwort	Yes	No	No	No
chickweed	Yes	No	No	No

As nouns, chickweed is a hypernym of stitchwort; that is, chickweed is a word with a broader meaning than stitchwort:

stitchwort: low-growing north temperate herb having small white star-shaped flowers; named for its alleged ability to ease sharp pains in the side
chickweed: any of various plants of the genus Stellaria

stitchwort (noun)	chickweed (noun)
low-growing north temperate herb having small white star-shaped flowers; named for its alleged ability to ease sharp pains in the side	any of various plants of the genus Stellaria
	any of various plants related to the common chickweed