Suppose I am writing a mathematics paper and discover some object and call it a "thingy"; not knowing of its existence outside of my discovery of it.
Later while doing some unrelated research I come across a paper that uses my "thingy" and it turns out to be well known object called a "doodad".
Should I cite the paper that gave me the vocabulary to describe a well known object if it only gave me its name?
This is my first real paper so I want to get my citations right.