Aren't they mutually Exclusive? Maybe I'm misunderstanding, but from what I've researched, Epistemological Nihilism is the belief that nothing can be known objectively or with certainty. Existential Nihilism, however, is the claim and belief that life has no meaning. Surely these two premises are mutually exclusive, because if nothing can be known, it cannot be know that life has no meaning. Please correct my definitions of they are wrong. It might be that existential Nihilism is defined as "the belief that it cannot be known whether life has meaning or not".
Side Note: Also from my knowledge, to be an epistemological nihilist, you have to be a moral nihilist, but you can be a moral nihilist without having to be an epistemological nihilst. This is because if nothing can be known, that includes what is and isn't moral, but you can think morality is subjective, whilst thinking other things are objective, therefore refuting epistemological nihilism.