The wiring can certainly handle this additional load. As can the breaker. Even with both of these plugged into this circuit, you are probably using only about 2/3rds of the breaker capacity. (Which is probably under-rated -- 12/2 would normally be a 20A breaker.)

The only problem might be if both the pump motor and the freezer compressor motor were to come on at the very same time -- they often draw a much higher current when first coming on. This might happen, for example, if the power was off and then came back on.

But this is only related to the physical wiring. There might well be something in the code, or your local code, that requires dedicated circuits.

I'll check to see if putting them both on the same will be to code here. Since I have the 12/2 I could change the breaker from a 15A to 20A to eliminate the possibility of any future problems. Thanks for the input.