Bock and Bock beer

Bock noun - A very strong lager traditionally brewed in the fall and aged through the winter for consumption in the spring.

Bock beer is a synonym for bock. In some cases you can use "Bock beer" instead a noun "Bock".

Bock beer noun - A very strong lager traditionally brewed in the fall and aged through the winter for consumption in the spring.

Bock is a synonym for bock beer. You can use "Bock" instead a noun phrase "Bock beer".