stumblebum vs lubber

stumblebum and lubber both are nouns.

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

As nouns, stumblebum and lubber are synonyms defined as:

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

stumblebum (noun)	lubber (noun)
an awkward stupid person	an awkward stupid person
a second-rate prize fighter	an inexperienced sailor; a sailor on the first voyage