trepan vs surgery

trepan and surgery both are nouns.

Word	Noun	Adjective	Verb	Adverb
trepan	Yes	No	Yes	No
surgery	Yes	No	No	No

trepan (noun)	surgery (noun)
a drill for cutting circular holes around a center	a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
a surgical instrument used to remove sections of bone from the skull	a room in a hospital equipped for the performance of surgical operations
	a room where a doctor or dentist can be consulted
	the branch of medical science that treats disease or injury by operative procedures

trepan (verb)	surgery (verb)
cut a hole with a trepan, as in surgery