講義 (kōgi) means “lecture” | MotiTan Japanese Dictionary

More examples

講義の前に、必要な資料を確認します。kō gi no mae ni hitsu yō na shi ryō o kaku nin shi ma su

I check the necessary materials before the lecture.

Presents a subject in an organized spoken explanation, usually for people who are learning it.

授業jugyō: A class in which a teacher guides learners through a subject.
講演kōen: A formal talk given to an audience about a subject.

学問や技術などについて、まとまった内容を人前で説明すること。gaku mon ya gi jutsu na do ni tsu i te ma to ma tta nai yō o hito mae de setsu mei su ru ko to

講 (kō, "explain") combines with 義 (gi, "meaning" or "doctrine") in this Sino-Japanese compound for an organized explanation of a subject.

In everyday Japanese, 講義 (kōgi) usually refers to an academic lecture, while the English word lecture can also describe a long corrective talk.