stoker vs manual laborer

stoker and manual laborer both are nouns.

Word	Noun	Adjective	Verb	Adverb
stoker	Yes	No	No	No
manual laborer	Yes	No	No	No

As nouns, manual laborer is a hypernym of stoker; that is, manual laborer is a word with a broader meaning than stoker:

stoker: a laborer who tends fires (as on a coal-fired train or steamship)
manual laborer: someone who works with their hands; someone engaged in manual labor

Other hypernyms of stoker include jack, laborer, labourer.

stoker (noun)	manual laborer (noun)
a mechanical device for stoking a furnace	someone who works with their hands; someone engaged in manual labor
a laborer who tends fires (as on a coal-fired train or steamship)