Axiom or Postulate?

Question

In wikipedia we see that the words “axiom” and “postulate” are synonyms:

“An axiom, or postulate, is a premise or starting point of reasoning”.

But in A Friendly Introduction to Numerical Analysis we read:

“The axioms and postulates of the appropriate discipline(s) -be they from the physical, natural, or social sciences- are then used to develop a set of assumptions and a set of equations, known as a mathematical model, which will be used for subsequent analysis”.

Wikipedia used the “or” but the auther used the “and”. What is the difference between axiom and postulate?

Answer 1

It seems that axioms and postulates refer to the same thing. From Dictionary.com, definition 6 of postulate:

Mathematics, Logic. a proposition that requires no proof, being self-evident, or that is for a specific purpose assumed true, and that is used in the proof of other propositions; axiom.