course vs stream

course and stream both are nouns.

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

As nouns, stream is a hyponym of course; that is, stream is a word with a more specific, narrower meaning than course:

course: a connected series of events or actions or developments
stream: dominant course (suggestive of running water) of successive events or ideas

Other hyponyms of course include current, flow.

As verbs, stream is a hyponym of course; that is, stream is a word with a more specific, narrower meaning than course:

course (noun)	stream (noun)
a mode of action	the act of flowing or streaming; continuous progression
education imparted in a series of lessons or meetings	a steady flow of a fluid (usually from natural causes)
facility consisting of a circumscribed area of land or water laid out for a sport	dominant course (suggestive of running water) of successive events or ideas
(construction) a layer of masonry	a natural body of running water flowing on or under the earth
part of a meal served at one time	something that resembles a flowing stream in moving continuously
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

course (verb)	stream (verb)
hunt with hounds	exude profusely
move along, of liquids	flow freely and abundantly
move swiftly through or over	to extend, wave or float outward, as if in the wind
	move in large numbers
	rain heavily

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