platelayer vs labourer

platelayer and labourer both are nouns.

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

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

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

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

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