clothing vs article of clothing

clothing and article of clothing both are nouns.

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

As nouns, clothing and article of clothing are synonyms defined as:

clothing and article of clothing: a covering designed to be worn on a person's body

Other synonyms of clothing include habiliment, vesture, wear, wearable.

clothing (noun)	article of clothing (noun)
a covering designed to be worn on a person's body	a covering designed to be worn on a person's body