circulate vs podcast

circulate and podcast both are verbs.

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

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

circulate: cause to become widely known
podcast: distribute (multimedia files) over the internet for playback on a mobile device or a personal computer

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

circulate (verb)	podcast (verb)
cause to become widely known	distribute (multimedia files) over the internet for playback on a mobile device or a personal computer
become widely known and passed on
move around freely from person to person or from place to place
move through a space, circuit or system, returning to the starting point
cause to be distributed
cause to move in a circuit or system