As nouns the difference between largess and faculty
is that largess is (uncountable) generosity in the giving of gifts or money while faculty is the scholarly staff at colleges or universities, as opposed to the students or support staff.
As nouns the difference between lagniappe and largess
is that lagniappe is (louisiana|mississippi|trinidad and tobago|uncommon) an extra or unexpected gift or benefit, such as that given to a customer when they purchase something else while largess is (uncountable) generosity in the giving of gifts or money.
As nouns the difference between largess and talent
is that largess is generosity in the giving of gifts or money while talent is a unit of weight and money used in ancient times in Greece, the Roman Empire, and the Middle East.