coder vs hacker

coder and hacker both are nouns.

Word	Noun	Adjective	Verb	Adverb
coder	Yes	No	No	No
hacker	Yes	No	No	No

As nouns, hacker is a hyponym of coder; that is, hacker is a word with a more specific, narrower meaning than coder:

coder: a person who designs and writes and tests computer programs
hacker: a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm

Other hyponyms of coder include cracker, cyber-terrorist, cyberpunk, gamedev.

coder (noun)	hacker (noun)
a person who designs and writes and tests computer programs	one who works hard at boring tasks
	a programmer for whom computing is its own reward; may enjoy the challenge of breaking into other computers but does no harm
	someone who plays golf poorly