un conseil
a piece of advice
Il m’a donné un conseil très important.
He gave me a very important piece of advice.
BY THE NUMBERS
Note how the French would say un conseil to denote a specific piece of advice but des conseils to express advice in a more indefinite sense. For example, Avez-vous des conseils? (Do you have any advice?) The difference between French and English in the latter example is that the French use a plural word for advice, while, in English, we have a singular word that denotes an indefinite quantity. These are examples of singular and plural differences between the two languages.
Vocabulary Section: Singulars and Plurals, Word of the Day