lumberjack vs feller

lumberjack and feller both are nouns.

Word	Noun	Adjective	Verb	Adverb
lumberjack	Yes	No	No	No
feller	Yes	No	No	No

As nouns, lumberjack and feller are synonyms defined as:

Other synonyms of lumberjack include faller, logger, lumberman.

lumberjack (noun)	feller (noun)
a short warm outer jacket	a boy or man
a person who fells trees	a person who fells trees