orientation course vs course

orientation course and course both are nouns.

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

As nouns, course is a hypernym of orientation course; that is, course is a word with a broader meaning than orientation course:

Other hypernyms of orientation course include class, course of instruction, course of study.

orientation course (noun)	course (noun)
a course introducing a new situation or environment	a mode of action
	education imparted in a series of lessons or meetings
	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

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