slacker vs do-nothing

slacker and do-nothing both are nouns.

Word	Noun	Adjective	Verb	Adverb
slacker	Yes	No	No	No
do-nothing	Yes	Yes	No	No

As nouns, do-nothing is a hypernym of slacker; that is, do-nothing is a word with a broader meaning than slacker:

slacker: a person who shirks his work or duty (especially one who tries to evade military service in wartime)
do-nothing: person who does no work

Other hypernyms of slacker include bum, idler, layabout, loafer.

slacker (noun)	do-nothing (noun)
a person who shirks his work or duty (especially one who tries to evade military service in wartime)	person who does no work

slacker (adjective)	do-nothing (adjective)
	characterized by inability or unwillingness to work toward a goal or assume responsibility