i bought office 2010 some time ago
but i work a lot with pdf
and office 2013 can handle and import and edit pdf as well
i'm thinking to install office 2013 and bought it
now the problem
can i keep office 2010?
in short can i have office 2010 and 2013 installed on the same pc /windows 8.1 pro 64bit
or they share the same dll?