programmer vs coder

programmer and coder both are nouns.

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

As nouns, programmer and coder are synonyms defined as:

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

Other synonyms of programmer include computer programmer, software engineer.

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