anesthetist vs anesthesiologist

anesthetist and anesthesiologist both are nouns.

Word	Noun	Adjective	Verb	Adverb
anesthetist	Yes	No	No	No
anesthesiologist	Yes	No	No	No

As nouns, anesthetist and anesthesiologist are synonyms defined as:

anesthetist and anesthesiologist: a specialist who administers an anesthetic to a patient before he is treated

Other synonyms of anesthetist include anaesthetist.

anesthetist (noun)	anesthesiologist (noun)
a specialist who administers an anesthetic to a patient before he is treated	a specialist who administers an anesthetic to a patient before he is treated