講義 (こうぎ)lecture

lecturenoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

講義, its kanji, and other words that share them.Open this graph

Kanji in 講義

講演こうえんlecture; address
講師こうしlecturer
講座こうざcourse (e.g. of lectures)
受講じゅこうtaking a lecture; attending a class
講習こうしゅうshort course; training
講堂こうどうauditorium; lecture hall
講談こうだんstorytelling (of war chronicles, revenge tales, etc.) with highly dramatic delivery; story
講ずるこうずるto take measures; to work out a plan
主義しゅぎdoctrine; rule
朝鮮民主主義人民共和国ちょうせんみんしゅしゅぎじんみんきょうわこくDemocratic People's Republic of Korea (North Korea); DPRK
義ぎmorality; righteousness
正義せいぎjustice; right
民主主義みんしゅしゅぎdemocracy
社会主義しゃかいしゅぎsocialism
義務ぎむduty; obligation
意義いぎmeaning; significance

See how 講義 connects to the rest of Japanese.