motion vs stream

motion and stream both are nouns.

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

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

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

motion (noun)	stream (noun)
a change of position that does not entail a change of location	the act of flowing or streaming; continuous progression
the act of changing location from one place to another	a steady flow of a fluid (usually from natural causes)
the use of movements (especially of the hands) to communicate familiar or prearranged signals	dominant course (suggestive of running water) of successive events or ideas
a formal proposal for action made to a deliberative assembly for discussion and vote	a natural body of running water flowing on or under the earth
a natural event that involves a change in the position or location of something	something that resembles a flowing stream in moving continuously
an optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object
a state of change

motion (verb)	stream (verb)
show, express or direct through movement	exude profusely
	flow freely and abundantly
	to extend, wave or float outward, as if in the wind
	move in large numbers
	rain heavily