journalist vs writer

journalist and writer both are nouns.

Word	Noun	Adjective	Verb	Adverb
journalist	Yes	No	No	No
writer	Yes	No	No	No

As nouns, writer is a hypernym of journalist; that is, writer is a word with a broader meaning than journalist:

journalist: a writer for newspapers and magazines
writer: writes (books or stories or articles or the like) professionally (for pay)

Other hypernyms of journalist include author.

As nouns, writer is a hypernym of journalist; that is, writer is a word with a broader meaning than journalist:

journalist (noun)	writer (noun)
a writer for newspapers and magazines	writes (books or stories or articles or the like) professionally (for pay)
someone who keeps a diary or journal	a person who is able to write and has written something