lecture vs course

lecture and course both are nouns.

Word	Noun	Adjective	Verb	Adverb
lecture	Yes	No	Yes	No
course	Yes	No	Yes	Yes

lecture (noun)	course (noun)
teaching by giving a discourse on some subject (typically to a class)	a mode of action
a speech that is open to the public	education imparted in a series of lessons or meetings
a lengthy rebuke	facility consisting of a circumscribed area of land or water laid out for a sport
	(construction) a layer of masonry
	part of a meal served at one time
	a connected series of events or actions or developments
	a body of students who are taught together
	general line of orientation
	a line or route along which something travels or moves

lecture (adverb)	course (adverb)
	as might be expected