work clothing vs work clothes

work clothing and work clothes both are nouns.

Word	Noun	Adjective	Verb	Adverb
work clothing	Yes	No	No	No
work clothes	Yes	No	No	No

As nouns, work clothing and work clothes are synonyms defined as:

Other synonyms of work clothing include work-clothes, work-clothing.

work clothing (noun)	work clothes (noun)
clothing worn for doing manual labor	clothing worn for doing manual labor