set up vs rig up

set up and rig up both are verbs.

Word	Noun	Adjective	Verb	Adverb
set up	No	No	Yes	No
rig up	No	No	Yes	No

As verbs, rig up is a hyponym of set up; that is, rig up is a word with a more specific, narrower meaning than set up:

Other hyponyms of set up include comfit, confect, confection, confuse, jumble, mix up, reassemble, configure, compound.

set up (verb)	rig up (verb)
get ready for a particular purpose or event	erect or construct, especially as a temporary measure
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
equip with sails or masts
arrange thoughts, ideas, temporal events
put into a proper or systematic order
erect and fasten
set up for use
place
create by putting components or members together
construct, build, or erect
begin, or enable someone else to begin, a venture by providing the means, logistics, etc.
produce
take or catch as if in a snare or trap
arrange the outcome of by means of deceit
set up or found