The document discusses four types of language: tactful, tentative, rhetorical, and literary. Tactful language avoids hurting others' feelings when delivering negative information or criticism. Tentative language indicates hesitation or reluctance and can range from moderately to mostly developed. Rhetorical language is consciously chosen to convince or elicit emotion, as used by politicians and activists. Literary language aims to impress and engage through techniques like metaphor, simile, allusion, and personification, as seen in poetry, novels, and political speeches.