picturing vs portrayal

picturing and portrayal both are nouns.

Word	Noun	Adjective	Verb	Adverb
picturing	Yes	No	No	No
portrayal	Yes	No	No	No

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

Other hyponyms of picturing include delineation, depiction, imaging, tomography, photography, picture taking.

picturing (noun)	portrayal (noun)
visual representation as by photography or painting	representation by drawing or painting etc
visual imagery	acting the part of a character on stage; dramatically representing the character by speech and action and gesture
	any likeness of a person, in any medium
	a representation by picture or portraiture
	a word picture of a person's appearance and character