adopt vs adoptee

adopt is not a noun while adoptee is a noun.

Word	Noun	Adjective	Verb	Adverb
adopt	No	No	Yes	No
adoptee	Yes	No	No	No

adopt (noun)	adoptee (noun)
	someone (such as a child) who has been adopted

adopt (verb)	adoptee (verb)
take into one's family
take on a certain form, attribute, or aspect
take up the cause, ideology, practice, method, of someone and use it as one's own
put into dramatic form
take up and practice as one's own
choose and follow; as of theories, ideas, policies, strategies or plans
take on titles, offices, duties, responsibilities