late 15c., gourmaunt, "glutton," from Old French gormant "glutton," originally an adjective, "gluttonous," a word of uncertain origin. Not considered to be connected with gourmet. Meaning "one fond of good eating" is from 1758.
The gourmand is one whose chief pleasure is eating; but a gourmet is a connoisseur of food and wines. In England the difference is this: a gourmand regards quantity more than quality, a gourmet quality more than quantity. [Brewer, "Dictionary of Phrase and Fable," Philadelphia, 1898]