send out vs transmit

send out and transmit both are verbs.

Word	Noun	Adjective	Verb	Adverb
send out	No	No	Yes	No
transmit	No	No	Yes	No

As verbs, transmit is a hypernym of send out; that is, transmit is a word with a broader meaning than send out:

send out: to cause or order to be taken, directed, or transmitted to another place
transmit: send from one person or place to another

Other hypernyms of send out include channel, channelise, channelize, transfer, transport.

send out (verb)	transmit (verb)
to cause or order to be taken, directed, or transmitted to another place	broadcast over the airwaves, as in radio or television
	send from one person or place to another
	transmit or serve as the medium for transmission
	transfer to another