code vs coder

code and coder both are nouns.

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

code (noun)	coder (noun)
a coding system used for transmitting messages requiring brevity or secrecy	a person who designs and writes and tests computer programs
a set of rules or principles or laws (especially written ones)
(computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions
a series of letters, numbers or symbols assigned to something for the purpose of classification or identification

code (verb)	coder (verb)
convert ordinary language into code
attach a code to