Presentation is the process of conveying information to an audience through a variety of mediums. Some synonyms for "presentation" include lecture, talk, speech, address, and discourse. A lecture is a formal presentation where the speaker guides the audience through a topic. A talk is a casual presentation where the speaker engages with the audience in a conversational style. A speech is a formal address where a speaker delivers their message. Address denotes a formal presentation to an assembled group. Discourse refers to a formal discussion or conversation about a topic. Each of these words can be used interchangeably depending on the context of the presentation.