Final answer:
Custard is richer, denser, and creamier than ice cream, primarily due to the higher egg yolk and fat content, and the reduced amount of air incorporated during freezing.
Step-by-step explanation:
The difference between custard and ice cream can be explained using three specific words, which describe the textural and physical characteristics of these frozen desserts. First, custard is often richer than ice cream due to the use of egg yolks in its base, which gives it a luxurious mouthfeel. Secondly, custard is typically denser than ice cream because it contains less air, known as overrun, which is introduced during the churning process. Lastly, custard is commonly perceived as creamier compared to ice cream, resulting from the higher fat content and egg yolks which contribute to a smoother texture.