rhinotomy vs surgical operation

rhinotomy and surgical operation both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhinotomy	Yes	No	No	No
surgical operation	Yes	No	No	No

As nouns, surgical operation is a hypernym of rhinotomy; that is, surgical operation is a word with a broader meaning than rhinotomy:

rhinotomy: surgical procedure in which an incision is made in the nose to drain accumulated pus
surgical operation: a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body

Other hypernyms of rhinotomy include operation, surgery, surgical procedure, surgical process.

rhinotomy (noun)	surgical operation (noun)
surgical procedure in which an incision is made in the nose to drain accumulated pus	a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body