Bourgeois

Les officiers étaient en bourgeois (or, en civil) = The officers were in plain clothes, in mufti.

Elle fait une bonne cuisine bourgeoise = She is a good plain cook.

Je prends mes repas dans une pension bourgeoise = I board at a private boarding-house.

Bourse

*Selon ta bourse gouverne ta bouche = Cut your coat according to your cloth.

[“Fond pride of dress is sure a very curse;
Ere fancy you consult, consult your purse.”
Benjamin Franklin.]

Faire bon marché de sa bourse = To say a thing has cost less than it has.

Obtenir une bourse au lycée = To gain an exhibition (or, scholarship) at a public school.