surgery vs surgical

surgery is a noun but surgical is not a noun.

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

surgery (noun)	surgical (noun)
a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
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

surgery (adjective)	surgical (adjective)
	relating to or requiring or amenable to treatment by surgery especially as opposed to medicine
	of or relating to or involving or used in surgery
	performed with great precision