Different things are not the same. My hat and my dog are different.
Divergence means separation: paths diverge when they are heading in different directions, moving further apart; they are divergent. At Banbury, the road to London diverges from the road to Oxford: they are divergent.
The opposite of divergent is convergent - if I travel from Oxford to Banbury, it converges with the London road there.
Note that the roads to Beijing, London and Oxford may all be different, but the road to Beijing and the road to London are not divergent or convergent, because they are never near each other..