workshop vs course of study

workshop and course of study both are nouns.

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

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

workshop: a brief intensive course for a small group; emphasizes problem solving
course of study: education imparted in a series of lessons or meetings

Other hypernyms of workshop include class, course, course of instruction.

workshop (noun)	course of study (noun)
a brief intensive course for a small group; emphasizes problem solving	education imparted in a series of lessons or meetings
small workplace where handcrafts or manufacturing are done	an integrated course of academic studies