How to create a new table to connect a relationship between two unique columns?

I am trying to connect our Google Analytics channel data with our budget sheet. in Google Analytics channels column, the channels are fixed (Direct, paid, organic, email, social ..etc). 

our budget sheet categories column contains (paid, events, social media..etc) 

I want to create a relationship between the channels from google analytics to our categories column in our budget sheet. for example: 

Google Analytics "Paid search" = Budget sheet "Paid" ..etc

How can i create a table with values (if its "paid search" then "paid") so when i filter according to Google Analytics channels, the visuals filter? 

I just want a way to create a conditional filtering in a new table and connect it to both GA + budget sheet columns