lump vs lumper

lump and lumper both are nouns.

Word	Noun	Adjective	Verb	Adverb
lump	Yes	No	Yes	No
lumper	Yes	No	No	No

lump (noun)	lumper (noun)
a compact mass	a taxonomist who classifies organisms into large groups on the basis of major characteristics
a large piece of something without definite shape	a laborer who loads and unloads vessels in a port
an awkward stupid person
an abnormal protuberance or localized enlargement

lump (verb)	lumper (verb)
group or chunk together in a certain order or place side by side
put together indiscriminately