structures, configurations, arrangements, compositions, organizations, assemblies, setups, constructs, patterns,, layouts, frameworks, systems, groupings, alignments, formations
lesson - class - talk - presentation - discourse - address - speech - seminar - tutorial - briefing - instruction - teaching - exposition - oration - sermon - homily - declamation - monologue - recitation - reading - session - workshop - symposium - colloquium - conference - discussion - meeting - forum - panel - training - schooling - education - course - curriculum - program - module - study - coaching - tutoring - mentoring - guidance - enlightenment - edification - information - explanation - elucidation
A lecture is an oral presentation intended to present information or teach people about a particular subject, for example by a university or college teacher. Lectures are used to convey critical information, history, background, theories, and equations. A politician's speech, a minister's sermon, or even a businessman’s presentation to a prospective client or partner can be considered a type of lecture.