portrait vs delineation

portrait and delineation both are nouns.

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

As nouns, delineation is a hypernym of portrait; that is, delineation is a word with a broader meaning than portrait:

Other hypernyms of portrait include characterisation, characterization, depiction, picture, word-painting, word picture.

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