fuller vs working person

fuller and working person both are nouns.

Word	Noun	Adjective	Verb	Adverb
fuller	Yes	No	No	No
working person	Yes	No	No	No

As nouns, working person is a hypernym of fuller; that is, working person is a word with a broader meaning than fuller:

fuller: a workman who fulls (cleans and thickens) freshly woven cloth for a living
working person: an employee who performs manual or industrial labor

Other hypernyms of fuller include working man, workingman, workman.

fuller (noun)	working person (noun)
a workman who fulls (cleans and thickens) freshly woven cloth for a living	an employee who performs manual or industrial labor