<human>:  What is the difference between a merlot and a cabernet sauvignon?
<bot>: The main difference between Merlot and Cabernet Sauvignon is in their flavors and aromas. Merlot typically has softer tannins and a fruit-forward profile with flavors of plum and cherry, while Cabernet Sauvignon tends to be more robust with more intense tannins and a fuller body that can offer notes of cassis, green pepper, and blackberry.