pal vs chum

pal and chum both are nouns.

Word	Noun	Adjective	Verb	Adverb
pal	Yes	No	Yes	No
chum	Yes	No	No	No

As nouns, pal and chum are synonyms defined as:

pal and chum: a close friend who accompanies his buddies in their activities

Other synonyms of pal include brother, buddy, crony, sidekick.

pal (noun)	chum (noun)
a close friend who accompanies his buddies in their activities	a large Pacific salmon with small spots on its back; an important food fish
	bait consisting of chopped fish and fish oils that are dumped overboard to attract fish
	a close friend who accompanies his buddies in their activities

pal (verb)	chum (verb)
become friends; act friendly towards