landmark vs surgery

landmark and surgery both are nouns.

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

landmark (noun)	surgery (noun)
an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken	a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
a mark showing the boundary of a piece of land	a room in a hospital equipped for the performance of surgical operations
an event marking a unique or important historical change of course or one on which important developments depend	a room where a doctor or dentist can be consulted
the position of a prominent or well-known object in a particular landscape	the branch of medical science that treats disease or injury by operative procedures