wrecker vs labourer

wrecker and labourer both are nouns.

Word	Noun	Adjective	Verb	Adverb
wrecker	Yes	No	No	No
labourer	Yes	No	No	No

As nouns, labourer is a hypernym of wrecker; that is, labourer is a word with a broader meaning than wrecker:

wrecker: someone who demolishes or dismantles buildings as a job
labourer: someone who works with their hands; someone engaged in manual labor

Other hypernyms of wrecker include jack, laborer, manual laborer.

wrecker (noun)	labourer (noun)
a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)	someone who works with their hands; someone engaged in manual labor
someone who commits sabotage or deliberately causes wrecks
someone who demolishes or dismantles buildings as a job