portraiture vs portrayal

portraiture and portrayal both are nouns.

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

As nouns, portrayal is a hypernym of portraiture; that is, portrayal is a word with a broader meaning than portraiture:

Other hypernyms of portraiture include delineation, depiction.

As nouns, portraiture and portrayal are synonyms defined as:

portraiture and portrayal: a word picture of a person's appearance and character

Other synonyms of portraiture include portrait.

portraiture (noun)	portrayal (noun)
the activity of making portraits	representation by drawing or painting etc
a word picture of a person's appearance and character	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