send vs refer

send and refer both are verbs.

Word	Noun	Adjective	Verb	Adverb
send	No	No	Yes	No
refer	No	No	Yes	No

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

Other hyponyms of send include cast, contrive, project, throw, turn, turn, divert, route, airt, redirect, blow.

send (verb)	refer (verb)
cause to be directed or transmitted to another place	think of, regard, or classify under a subsuming principle or with a general group or in relation to another
transfer	have as a meaning
broadcast over the airwaves, as in radio or television	make reference to
assign to a station	use a name to designate
to cause or order to be taken, directed, or transmitted to another place	seek information from
transport commercially	send or direct for treatment, information, or a decision
cause to go somewhere	be relevant to
cause to be admitted; of persons to an institution