adopt vs adoption

adopt is not a noun while adoption is a noun.

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

adopt (noun)	adoption (noun)
	the act of accepting with approval; favorable reception
	the appropriation (of ideas or words etc) from another source
	a legal proceeding that creates a parent-child relation between persons not related by blood; the adopted child is entitled to all privileges belonging to a natural child of the adoptive parents (including the right to inherit)

adopt (verb)	adoption (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