raiment vs article of clothing

raiment and article of clothing both are nouns.

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

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

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

raiment (noun)	article of clothing (noun)
especially fine or decorative clothing	a covering designed to be worn on a person's body

raiment (verb)	article of clothing (verb)
provide with clothes or put clothes on