Frozen pudding and Frozen dessert

Frozen pudding noun - A chilled dessert consisting of a mixture of custard and nuts and (sometimes) liquor.

Frozen dessert and frozen pudding are semantically related. In some cases you can use "Frozen dessert" instead a noun phrase "Frozen pudding".

Frozen dessert noun - Any of various desserts prepared by freezing.

Frozen pudding and frozen dessert are semantically related. Sometimes you can replace phrase "Frozen pudding" with "Frozen dessert", this phrases are similar.