We don't have a different word for love. It's that we are too surrounded in the language presented to us in life that we have abandoned the language of our minds.
Human love is only different because we tried to define it. And in the generalized definition of what we think love should be, we have changed it all together, atleast from the human perspective. Thus creating, human love. Which only resembles love in the slightest essence. Love, even at it's simplest form, is still love.