tracklayer vs labourer

tracklayer and labourer both are nouns.

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

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

tracklayer: a workman who lays and repairs railroad tracks
labourer: someone who works with their hands; someone engaged in manual labor

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

tracklayer (noun)	labourer (noun)
a workman who lays and repairs railroad tracks	someone who works with their hands; someone engaged in manual labor