robotic vs automatic

robotic is not a noun while automatic is a noun.

Word	Noun	Adjective	Verb	Adverb
robotic	No	Yes	No	No
automatic	Yes	Yes	No	No

As adjectives, robotic and automatic are synonyms defined as:

robotic and automatic: resembling the unthinking functioning of a machine

Other synonyms of robotic include automatonlike, machinelike, robotlike.

robotic (noun)	automatic (noun)
	self-loading rifle capable of automatic fire
	a pistol that will keep firing until the ammunition is gone or the trigger is released

robotic (adjective)	automatic (adjective)
of or relating to mechanical robots	operating with minimal human intervention; independent of external control
resembling the unthinking functioning of a machine	without volition or conscious control
	resembling the unthinking functioning of a machine