adjoin vs contact

adjoin is not a noun while contact is a noun.

Word	Noun	Adjective	Verb	Adverb
adjoin	No	No	Yes	No
contact	Yes	No	Yes	No

As verbs, contact is a hypernym of adjoin; that is, contact is a word with a broader meaning than adjoin:

Other hypernyms of adjoin include adjoin, meet, touch.

As verbs, adjoin and contact are synonyms defined as:

Other synonyms of adjoin include meet, touch.

adjoin (noun)	contact (noun)
	the act of touching physically
	close interaction
	(electronics) a junction where things (as two electrical conductors) touch or are in physical contact
	a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
	a channel for communication between groups
	a communicative interaction
	the physical coming together of two or more things
	a person who is in a position to give you special assistance
	the state or condition of touching or of being in immediate proximity

adjoin (verb)	contact (verb)
attach or add	be in or establish communication with
lie adjacent to another or share a boundary	be in direct physical contact with; make contact
be in direct physical contact with; make contact