lecture vs course of instruction

lecture and course of instruction both are nouns.

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

lecture (noun)	course of instruction (noun)
teaching by giving a discourse on some subject (typically to a class)	education imparted in a series of lessons or meetings
a speech that is open to the public
a lengthy rebuke

lecture (verb)	course of instruction (verb)
censure severely or angrily
deliver a lecture or talk