What is the word for a word that has multiple meanings based upon how it is pronounced e.g. minute (as in 60 seconds) or minute (as in very, very small)?
The word you are looking for is homograph. This covers words spelt in the same way but of different meaning or origins (e.g. pole = piece of wood or metal and pole as in North Pole, as well as words of identical spelling but different pronunciation (e.g. lead noun and lead verb).