They are both genres. eventhough Non Fiction speaks of Facts partly, it may have elements of imagination, on the other hand Fiction is based on Reality although there is further construction of imagination. Unexpressable truths, desires which are suppressed into unconscious mind are channelised into literature and art despite superficially those seem fiction but those have many facts associated with author's emotions, feelings either in the form of metonomy or or symbolic.
Fiction
fiction
nonfiction
Fiction
Fiction
Fiction.
nonfiction
fiction and nonfiction fiction is something not real. nonfiction is true
Both
Both
fiction
Fiction .
The opposite of non-fiction is fiction.