Buck's fizz and Mixed drink

Buck's fizz noun - A mixed drink containing champagne and orange juice.

Mixed drink and buck's fizz are semantically related. In some cases you can use "Mixed drink" instead a noun phrase "Buck's fizz".

Mixed drink noun - Made of two or more ingredients.

Buck's fizz and mixed drink are semantically related. Sometimes you can replace phrase "Buck's fizz" with "Mixed drink", this phrases are similar.