change course vs jib

change course is not a noun while jib is a noun.

Word	Noun	Adjective	Verb	Adverb
change course	No	No	Yes	No
jib	Yes	No	Yes	No

As verbs, change course and jib are synonyms defined as:

Other synonyms of change course include gybe, jibe.

change course (noun)	jib (noun)
	any triangular fore-and-aft sail (set forward of the foremast)

change course (verb)	jib (verb)
shift from one side of the ship to the other	shift from one side of the ship to the other
	refuse to comply