depiction vs portrait

depiction and portrait both are nouns.

Word	Noun	Adjective	Verb	Adverb
depiction	Yes	No	No	No
portrait	Yes	No	No	No

As nouns, portrait is a hyponym of depiction; that is, portrait is a word with a more specific, narrower meaning than depiction:

Other hyponyms of depiction include epithet, portraiture, portrayal.

depiction (noun)	portrait (noun)
representation by drawing or painting etc	any likeness of a person, in any medium
a drawing of the outlines of forms or objects	a word picture of a person's appearance and character
a representation by picture or portraiture
a graphic or vivid verbal description