circulate vs scatter

circulate is not a noun while scatter is a noun.

Word	Noun	Adjective	Verb	Adverb
circulate	No	No	Yes	No
scatter	Yes	No	Yes	No

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

Other hyponyms of circulate include send around, utter, spread, spread out.

circulate (noun)	scatter (noun)
	the act of scattering
	a haphazard distribution in all directions

circulate (verb)	scatter (verb)
cause to become widely known	cause to separate
become widely known and passed on	distribute loosely
move around freely from person to person or from place to place	sow by scattering
move through a space, circuit or system, returning to the starting point	move away from each other
cause to be distributed	to cause to separate and go in different directions
cause to move in a circuit or system	strew or distribute over an area