orientation course vs orientation

orientation course and orientation both are nouns.

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

As nouns, orientation course and orientation are synonyms defined as:

orientation course and orientation: a course introducing a new situation or environment

orientation course (noun)	orientation (noun)
a course introducing a new situation or environment	the act of orienting
	a course introducing a new situation or environment
	an integrated set of attitudes and beliefs
	a person's awareness of self with regard to position and time and place and personal relationships
	a predisposition in favor of something
	position or alignment relative to points of the compass or other specific directions