grief-stricken vs bereaved

grief-stricken is not a noun while bereaved is a noun.

Word	Noun	Adjective	Verb	Adverb
grief-stricken	No	Yes	No	No
bereaved	Yes	Yes	No	No

As adjectives, grief-stricken and bereaved are synonyms defined as:

Other synonyms of grief-stricken include bereft, grieving, mourning, sorrowing.

grief-stricken (noun)	bereaved (noun)
	a person who has suffered the death of someone they loved

grief-stricken (adjective)	bereaved (adjective)
sorrowful through loss or deprivation	sorrowful through loss or deprivation