lumper vs manual laborer

lumper and manual laborer both are nouns.

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

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

lumper: a laborer who loads and unloads vessels in a port
manual laborer: someone who works with their hands; someone engaged in manual labor

Other hypernyms of lumper include jack, laborer, labourer.

lumper (noun)	manual laborer (noun)
a taxonomist who classifies organisms into large groups on the basis of major characteristics	someone who works with their hands; someone engaged in manual labor
a laborer who loads and unloads vessels in a port