If I read your question correctly, the main classifications of literature are as followed; Fiction, Non-Fiction, American Literature, World Literature, Western and Eastern.
Under Fiction- Fantasy, Realistic, Sci-Fi, Historical, Horror, ect.
Under Non-Fiction- Historical, science, the dictionary, your text books for class, ect.
I hope that this answered any questions you have.
The main classifications of literature are fiction (including novels and short stories), non-fiction (including biographies and essays), poetry, and drama (including plays and scripts). These categories encompass the majority of literary works across different genres and styles.
pure substance
There are far more than two genres, or categories, of literature. Perhaps you are thinking of the two major classifications of literature, fiction and non-fiction.
Terrestrial and gaseous..
pure substance
pure substance
The main classification is discrete or continuous.
oral literature and literature
Metallic, stony, mixed.
Metals, Non-metals, and Metalloids
The two main classifications are animals and plants. Animals are multicellular organisms that rely on other organisms for food, while plants are multicellular organisms that can produce their own food through photosynthesis.
It's Stony, Stony iron and iron.
Mainly the type of insects and birds.