Difference between TDR and Disneyland Resort (USA)

There are many differences between TDR and Disneyland Resort(DLR). DLR is much larger than TDL. Disneyland is twice thirds times as large as TDL. I think you can't enjoy all of Disneyland in 1 day. So you have to stay for several days to go around DLR. DLR is consisted of Disneyland and Disney California Adventure. Disneyland differ little from TDL, but there is a great difference between California Adventure and other Disneyparks. California Adventure has many genuine roller coasters and target on the older group than Disneyland and other Disneyparks.