shirker vs layabout

shirker and layabout both are nouns.

Word	Noun	Adjective	Verb	Adverb
shirker	Yes	No	No	No
layabout	Yes	No	No	No

As nouns, layabout is a hypernym of shirker; that is, layabout is a word with a broader meaning than shirker:

shirker: a person who shirks his work or duty (especially one who tries to evade military service in wartime)
layabout: person who does no work

Other hypernyms of shirker include bum, do-nothing, idler, loafer.

shirker (noun)	layabout (noun)
a person who shirks his work or duty (especially one who tries to evade military service in wartime)	person who does no work