postiche vs attire

postiche and attire both are nouns.

Word	Noun	Adjective	Verb	Adverb
postiche	Yes	No	No	No
attire	Yes	No	Yes	No

As nouns, attire is a hypernym of postiche; that is, attire is a word with a broader meaning than postiche:

postiche: a covering or bunch of human or artificial hair used for disguise or adornment
attire: clothing of a distinctive style or for a particular occasion

Other hypernyms of postiche include dress, garb.

postiche (noun)	attire (noun)
something that is a counterfeit; not what it seems to be	clothing of a distinctive style or for a particular occasion
a covering or bunch of human or artificial hair used for disguise or adornment

postiche (verb)	attire (verb)
	put on special clothes to appear particularly appealing and attractive