lout vs stumblebum

lout and stumblebum both are nouns.

Word	Noun	Adjective	Verb	Adverb
lout	Yes	No	No	No
stumblebum	Yes	No	No	No

As nouns, lout and stumblebum are synonyms defined as:

Other synonyms of lout include clod, gawk, goon, lubber, lummox, lump, oaf.

lout (noun)	stumblebum (noun)
an awkward stupid person	an awkward stupid person
	a second-rate prize fighter