If its not clear from the previous answer, you can have both a full and a runtime version on the same workstation but they must be different versions of Access.
You can also have more than one full version of Access (in fact any Office app except Outlook) but it can be tricky managing that successfully.
Alternatively, set up one or more VMs and you can have all the versions you like.
In fact I have every version of Access from 1.0 through to 365 using multiple VMs including both "witnesses" for A2010 or later. See http://www.mendipdatasystems.co.uk/d...ion/4594459112