attitudinize vs posture

attitudinize is not a noun while posture is a noun.

Word	Noun	Adjective	Verb	Adverb
attitudinize	No	No	Yes	No
posture	Yes	No	Yes	No

As verbs, posture is a hypernym of attitudinize; that is, posture is a word with a broader meaning than attitudinize:

Other hypernyms of attitudinize include pose.

attitudinize (noun)	posture (noun)
	the arrangement of the body and its limbs
	characteristic way of bearing one's body
	capability in terms of personnel and materiel that affect the capacity to fight a war
	a rationalized mental attitude

attitudinize (verb)	posture (verb)
assume certain affected attitudes	assume a posture as for artistic purposes
	behave affectedly or unnaturally in order to impress others