shopwindow vs display window

shopwindow and display window both are nouns.

Word	Noun	Adjective	Verb	Adverb
shopwindow	Yes	No	No	No
display window	Yes	No	No	No

As nouns, shopwindow and display window are synonyms defined as:

shopwindow and display window: a window of a store facing onto the street; used to display merchandise for sale in the store

Other synonyms of shopwindow include shop window, show window.

shopwindow (noun)	display window (noun)
a window of a store facing onto the street; used to display merchandise for sale in the store	a window of a store facing onto the street; used to display merchandise for sale in the store