crash course vs course of study

crash course and course of study both are nouns.

Word	Noun	Adjective	Verb	Adverb
crash course	Yes	No	No	No
course of study	Yes	No	No	No

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

crash course: a rapid and intense course of training or research (usually undertaken in an emergency)
course of study: an integrated course of academic studies

Other hypernyms of crash course include curriculum, program, programme, syllabus.

crash course (noun)	course of study (noun)
a rapid and intense course of training or research (usually undertaken in an emergency)	education imparted in a series of lessons or meetings
	an integrated course of academic studies