automated teller vs automated teller machine

automated teller and automated teller machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
automated teller	Yes	No	No	No
automated teller machine	Yes	No	No	No

As nouns, automated teller and automated teller machine are synonyms defined as:

automated teller and automated teller machine: an unattended machine (outside some banks) that dispenses money when a personal coded card is used

Other synonyms of automated teller include ATM, automatic teller, automatic teller machine, cash dispenser, cash machine.

automated teller (noun)	automated teller machine (noun)
an unattended machine (outside some banks) that dispenses money when a personal coded card is used	an unattended machine (outside some banks) that dispenses money when a personal coded card is used