The word is used with various degrees of precision. Some, for instance, classify the novel as a genre, and consider the kinds of novels (Bildungsroman, picaresque, Gothic, and so on) "sub-genres." Others consider these specific kinds of novels genres, and consider the term novel a kind of catch-all. The adjective is generic.
Note: This guide is still in the early stages of development.
Three question marks mean I have to write more on the subject. Bear with me.