circulate vs sow

circulate is not a noun while sow is a noun.

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

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

Other hyponyms of circulate include podcast, generalise, generalize, popularise, popularize, vulgarise, vulgarize, carry, run.

circulate (noun)	sow (noun)
	an adult female hog

circulate (verb)	sow (verb)
cause to become widely known	introduce into an environment
become widely known and passed on	place (seeds) in or on the ground for future growth
move around freely from person to person or from place to place	place seeds in or on (the ground)
move through a space, circuit or system, returning to the starting point
cause to be distributed
cause to move in a circuit or system