swagman vs gypsy

swagman and gypsy both are nouns.

Word	Noun	Adjective	Verb	Adverb
swagman	Yes	No	No	No
gypsy	Yes	No	No	No

As nouns, gypsy is a hypernym of swagman; that is, gypsy is a word with a broader meaning than swagman:

swagman: an itinerant Australian laborer who carries his personal belongings in a bundle as he travels around in search of work
gypsy: a laborer who moves from place to place as demanded by employment

Other hypernyms of swagman include gipsy, itinerant.

swagman (noun)	gypsy (noun)
an itinerant Australian laborer who carries his personal belongings in a bundle as he travels around in search of work	a laborer who moves from place to place as demanded by employment
	a person who resembles a Romani in leading an unconventional, nomadic way of life