dwarf iris vs iris

dwarf iris and iris both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwarf iris	Yes	No	No	No
iris	Yes	No	No	No

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

dwarf iris: low-growing spring-flowering American iris with bright blue-lilac flowers
iris: 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, fleur-de-lis, sword lily.

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

dwarf iris: low-growing summer-flowering iris of northeastern United States
iris: 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, fleur-de-lis, sword lily.

dwarf iris (noun)	iris (noun)
low-growing spring-flowering American iris with bright blue-lilac flowers	diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
low-growing summer-flowering iris of northeastern United States	muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye
	plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals