Well, 'denial lemon fanfiction' could potentially be a type of fan - created story. 'Denial' might imply that the characters in the story are in a state of refusing to accept something, perhaps a relationship or a truth. 'Lemon' is often used in fanfiction to indicate some level of adult or sexual content. But again, it really depends on the specific fan community and the author's intention. It could also be a very unique take on a story where the denial aspect is something other than the obvious, like denying a supernatural power or something similar.
I'm not entirely sure specifically what 'cold denial fanfic' is about without more context. It could potentially be a fan - created story within a particular fandom that involves themes of coldness and denial, perhaps in the context of character relationships or a specific plot situation.
The movie Denial is based on a true story. It takes elements from real-life situations and transforms them into a compelling cinematic narrative. However, as with many film adaptations, certain details may have been embellished or simplified to make it more engaging for the audience.