coder vs programmer

coder and programmer both are nouns.

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

As nouns, coder and programmer are synonyms defined as:

coder and programmer: a person who designs and writes and tests computer programs

Other synonyms of coder include computer programmer, software engineer.

coder (noun)	programmer (noun)
a person who designs and writes and tests computer programs	a person who designs and writes and tests computer programs