Final answer:
The two-word term for vanilla ice cream is 'French vanilla,' which refers to a richer vanilla flavor often made with eggs.
Step-by-step explanation:
The term used to describe vanilla ice cream in a two-word phrase is often French vanilla. French vanilla ice cream is characterized by a richer consistency and a more pronounced vanilla flavor, usually featuring eggs in its ingredients, which distinguishes it from plain vanilla flavors. This phrase can also be found in the poem The Emperor of Ice Cream by Wallace Stevens, where the phrase metaphorically stands out to merge the sensual and the stark realities of life, though it may not literally refer to the ice cream flavor in its verses.