pal vs sidekick

pal and sidekick both are nouns.

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

As nouns, pal and sidekick are synonyms defined as:

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

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

pal (noun)	sidekick (noun)
a close friend who accompanies his buddies in their activities	a close friend who accompanies his buddies in their activities

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