Banc vs. banque
While they look and sound similar, the French words banc and banque are classic false friends. Banc most often refers to a physical bench, while banque refers to a financial institution. However, they can both be used in contexts related to banks or collections, which is where the confusion arises.
Banc
A2The word banc (masculine noun) primarily means bench, a long seat for several people. By extension, it can refer to other long, raised surfaces or natural collections, such as a sandbank, a shoal of fish, a workbench, or the defendant's bench in a courtroom.
Nous nous sommes reposés sur un banc public dans le parc.
(We rested on a public bench in the park.)
Le bateau a heurté un grand banc de sable près de la côte.
(The boat hit a large sandbank near the coast.)
Un immense banc de sardines passait sous le bateau.
(An immense shoal of sardines was passing under the boat.)
L'accusé s'est assis sur le banc des accusés sans dire un mot.
(The defendant sat on the defendant's bench without saying a word.)
Il a passé toute sa jeunesse sur les bancs de l'école.
(He spent his entire youth on the school benches.)
La nouvelle voiture est sur le banc d'essai pour des tests de performance.
(The new car is on the test bench for performance tests.)
Banque
A2The word banque (feminine noun) almost always refers to a bank as a financial institution where money is kept. It is also used for other types of organized storage centers or repositories, such as a blood bank, a data bank, or the bank in a gambling game.
Je dois aller à la banque pour retirer de l'argent.
(I have to go to the bank to withdraw money.)
La banque centrale a annoncé une nouvelle politique monétaire.
(The central bank announced a new monetary policy.)
Elle a fait un don à la banque du sang de l'hôpital.
(She made a donation to the hospital's blood bank.)
Les enquêteurs ont consulté une banque de données très complète.
(The investigators consulted a very comprehensive data bank.)
J'ai trouvé cette photo dans une banque d'images en ligne.
(I found this photo in an online image bank.)
Dans ce jeu de cartes, c'est moi qui fais la banque.
(In this card game, I am the one who is the bank.)
Summary
In short, if you are sitting on it, it's a banc (a bench). If you are depositing your money in it, it's a banque (a financial bank). The main overlap occurs with abstract collections: use banque for organized repositories like banque de données (data bank) or banque du sang (blood bank). Use banc for natural formations or groups like a banc de poissons (shoal of fish) or a banc de sable (sandbank).