Monday Muddle: set up, setup

set up: (phrasal verb) arrange; construct, organize; make ready for use; start (a business)

setup: (noun, adjective) organization, organizational; preparation, preparatory

As a noun, setup is the result of setting something up.
e.g. a great camera setup

As an adjective, setup describes something that will be used in setting something up.
e.g. use the setup checklist