^If it isn't strictly equivalent, it's sifferent. I made a new
  word up today and even two symbols describing it. Most things
  that are the same, are also a little bit different and even the
  most different things (or people!) have _something_ in common
  (or the same). I even made it on a website -
  http://sifferent.com - along with a handy chart for resolving
  human conflict by listing sames and differences by the people of
  Human Systems Dynamics. Will it take off? Who knows. But I think
  it's a missing word for something most of us know is true from
  day-to-day life.^