dwarf iris vs fleur-de-lis

dwarf iris and fleur-de-lis both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwarf iris	Yes	No	No	No
fleur-de-lis	Yes	No	No	No

As nouns, fleur-de-lis is a hypernym of dwarf iris; that is, fleur-de-lis is a word with a broader meaning than dwarf iris:

dwarf iris: low-growing spring-flowering American iris with bright blue-lilac flowers
fleur-de-lis: plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals

Other hypernyms of dwarf iris include flag, iris, sword lily.

As nouns, fleur-de-lis is a hypernym of dwarf iris; that is, fleur-de-lis is a word with a broader meaning than dwarf iris:

dwarf iris: low-growing summer-flowering iris of northeastern United States
fleur-de-lis: plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals

Other hypernyms of dwarf iris include flag, iris, sword lily.

dwarf iris (noun)	fleur-de-lis (noun)
low-growing spring-flowering American iris with bright blue-lilac flowers	(heraldry) charge consisting of a conventionalized representation of an iris
low-growing summer-flowering iris of northeastern United States	plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals