postpose vs pose

postpose is not a noun while pose is a noun.

Word	Noun	Adjective	Verb	Adverb
postpose	No	No	Yes	No
pose	Yes	No	Yes	No

As verbs, pose is a hypernym of postpose; that is, pose is a word with a broader meaning than postpose:

Other hypernyms of postpose include lay, place, position, put, set.

postpose (noun)	pose (noun)
	a deliberate pretense or exaggerated display
	affected manners intended to impress others
	a posture assumed by models for photographic or artistic purposes

postpose (verb)	pose (verb)
place after another constituent in the sentence	be a mystery or bewildering to
	pretend to be someone you are not; sometimes with fraudulent intentions
	put into a certain place or abstract location
	assume a posture as for artistic purposes
	behave affectedly or unnaturally in order to impress others
	offer for others to consider