English literature:
writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. the entire body of writings of a specific language, period, people, etc.: the literature of England.
English grammar is the way in which meanings are encoded into wordings in the English language. This includes the structure of words, phrases, clauses, sentences, and the structure of whole texts.
English Grammar:
There are historical, social, cultural, and regional varieties of English. Divergences from the grammar described here occur in some dialects. This article describes a generalized, present-day Standard English – a form of speech and writing used in public discourse, including broadcasting, education, entertainment, government, and news, over a range of registers from formal to informal. There are differences in grammar among the standard forms of British, American, and Australian English, although these are more minor than differences in vocabulary and pronunciation.
