bracero vs labourer

bracero and labourer both are nouns.

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

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

bracero: a Mexican laborer who worked in the United States on farms and railroads in order to ease labor shortages during World War II
labourer: someone who works with their hands; someone engaged in manual labor

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

bracero (noun)	labourer (noun)
a Mexican laborer who worked in the United States on farms and railroads in order to ease labor shortages during World War II	someone who works with their hands; someone engaged in manual labor