What's the point...
Is there even such a thing as nihilism
People and so their brains are separate, language is not meaning but correlations, words have no true meaning, human relations are meaningless and by inference our brains are not unitary, neurons themselves are disconnected and meaningless isles, articulating meaningless data in intangible networks
It'S ALL A LIE! Let's wear goth clothes!
On a more serious tone, there's no such thing as a nihilist, everything in life is based on belief. The belief that the door will open, the belief that your hand is yours etc, that what we experience is reliable, that walls are 'solid' (even though quantum physics wouldn't aggree, but that doesn't matter to a macro scale being with a life span under 10 to the power of a gazillion years that'd have nothing better to do than get into walls all day)
Nihilistic philosophers are oxymoronic, they shouldn't believe in their own philosophy enough to bother defining it or want to promote it.
The difference between relativistic thinking and nihilism is that while neither claim any absolute, the former can work for you and broaden you while nihilism is self defeating. You work with what you have, we have imperfect information, limited computing abilities and evolutionary biases in our perception of the world.
That's not a bad thing, because that's also what allows you to enjoy a milk shake, sex, or maths.