display window vs shopwindow

display window and shopwindow both are nouns.

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

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

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

Other synonyms of display window include shop window, show window.

display window (noun)	shopwindow (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