centrefold vs foldout

centrefold and foldout both are nouns.

Word	Noun	Adjective	Verb	Adverb
centrefold	Yes	No	No	No
foldout	Yes	No	No	No

As nouns, foldout is a hypernym of centrefold; that is, foldout is a word with a broader meaning than centrefold:

centrefold: a magazine center spread; especially a foldout of a large photograph or map or other feature
foldout: an oversize page that is folded in to a book or magazine

Other hypernyms of centrefold include facing pages, spread, spread head, spreadhead, gatefold.

centrefold (noun)	foldout (noun)
a magazine center spread; especially a foldout of a large photograph or map or other feature	an oversize page that is folded in to a book or magazine