dormer window vs oxeye

dormer window and oxeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
dormer window	Yes	No	No	No
oxeye	Yes	No	No	No

As nouns, oxeye is a hyponym of dormer window; that is, oxeye is a word with a more specific, narrower meaning than dormer window:

dormer window: the window in a gabled extension built to accommodate a window
oxeye: an oval or round dormer window

dormer window (noun)	oxeye (noun)
a gabled extension built out from a sloping roof to accommodate a vertical window	an oval or round dormer window
the window in a gabled extension built to accommodate a window	Eurasian perennial herbs having daisylike flowers with yellow rays and dark centers
	any North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowers