gravedigger vs manual laborer

gravedigger and manual laborer both are nouns.

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

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

gravedigger: a person who earns a living by digging graves
manual laborer: someone who works with their hands; someone engaged in manual labor

Other hypernyms of gravedigger include jack, laborer, labourer.

gravedigger (noun)	manual laborer (noun)
a person who earns a living by digging graves	someone who works with their hands; someone engaged in manual labor