attire vs article of clothing

attire and article of clothing both are nouns.

Word	Noun	Adjective	Verb	Adverb
attire	Yes	No	Yes	No
article of clothing	Yes	No	No	No

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

Other hypernyms of attire include clothing, habiliment, vesture, wear, wearable.

attire (noun)	article of clothing (noun)
clothing of a distinctive style or for a particular occasion	a covering designed to be worn on a person's body

attire (verb)	article of clothing (verb)
put on special clothes to appear particularly appealing and attractive