organ transplant vs surgery

organ transplant and surgery both are nouns.

Word	Noun	Adjective	Verb	Adverb
organ transplant	Yes	No	No	No
surgery	Yes	No	No	No

As nouns, surgery is a hypernym of organ transplant; that is, surgery is a word with a broader meaning than organ transplant:

organ transplant: an operation moving an organ from one organism (the donor) to another (the recipient)
surgery: a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body

Other hypernyms of organ transplant include operation, surgical operation, surgical procedure, surgical process.

organ transplant (noun)	surgery (noun)
an operation moving an organ from one organism (the donor) to another (the recipient)	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