program vs programmer

program and programmer both are nouns.

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

program (noun)	programmer (noun)
a performance (or series of performances) at a public presentation	a person who designs and writes and tests computer programs
a series of steps to be carried out or goals to be accomplished
a system of projects or services intended to meet a public need
an announcement of the events that will occur as part of a theatrical or sporting event
a radio or television show
(computer science) a sequence of instructions that a computer can interpret and execute
a document stating the aims and principles of a political party
an integrated course of academic studies

program (verb)	programmer (verb)
arrange a program of or for
write a computer program