writer vs Post

writer and Post both are nouns.

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

writer (noun)	Post (noun)
writes (books or stories or articles or the like) professionally (for pay)	United States manufacturer of breakfast cereals and Postum (1854-1914)
a person who is able to write and has written something	United States female author who wrote a book and a syndicated newspaper column on etiquette (1872-1960)
	United States aviator who in 1933 made the first solo flight around the world (1899-1935)