Question: is 1 plus 1 really 2?
Answer: The definition of 2 is 1+1. This means that we invented the symbol the "2" as a shorthand for "1+1". This means that "Two" is just a short way of saying "One-Plus-One". So yes, 2 is always the same thing as 1+1, because that's what we define 2 to be.