course of lectures vs program

course of lectures and program both are nouns.

Word	Noun	Adjective	Verb	Adverb
course of lectures	Yes	No	No	No
program	Yes	No	Yes	No

course of lectures (noun)	program (noun)
a series of lectures dealing with a subject	a performance (or series of performances) at a public presentation
	a series of steps to be carried out or goals to be accomplished
	a system of projects or services intended to meet a public need
	an announcement of the events that will occur as part of a theatrical or sporting event
	a radio or television show
	(computer science) a sequence of instructions that a computer can interpret and execute
	a document stating the aims and principles of a political party
	an integrated course of academic studies

course of lectures (verb)	program (verb)
	arrange a program of or for
	write a computer program