pansy vs coward

pansy and coward both are nouns.

Word	Noun	Adjective	Verb	Adverb
pansy	Yes	No	No	No
coward	Yes	No	No	No

As nouns, coward is a hypernym of pansy; that is, coward is a word with a broader meaning than pansy:

pansy (noun)	coward (noun)
offensive term for a homosexual man	a person who shows fear or timidity
a timid man or boy considered childish or unassertive
large-flowered garden plant derived chiefly from the wild pansy of Europe and having velvety petals of various colors