section hand vs labourer

section hand and labourer both are nouns.

Word	Noun	Adjective	Verb	Adverb
section hand	Yes	No	No	No
labourer	Yes	No	No	No

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

section hand: a laborer assigned to a section gang
labourer: someone who works with their hands; someone engaged in manual labor

Other hypernyms of section hand include jack, laborer, manual laborer.

section hand (noun)	labourer (noun)
a laborer assigned to a section gang	someone who works with their hands; someone engaged in manual labor