How do I combine 2 lists into one in linq?

Question

Hi there, was just wondering how I would able to combine 2 lists together so columns in list one are combined with columns in list 2. In the example below both list have ClientID and FiscalYear.

Lists 1:
ClientID  |  FiscalYear  | TotalCars
1               19-20          100
1               20-21          230
2               19-20          50

List 2:
Client ID  |  FiscalYear | NumOfShops
1               19-20          5
1               20-21          6
2               19-20          4

Is there a way to combine both of those list into 1 so that the data is like:

ClientID  |  FiscalYear |  TotalCars | NumOfShops
1               19-20         100         5
1               20-21         230         6
2               19-20         50          4

Thanks!