This is the 8817th most frequent French word.
bougie
"Candle."
Here, 'bougie' refers to a candle, an object that burns to provide light.
La bougie illumine la pièce pendant la fête.
The candle lights up the room during the party.
In this context, 'bougie' refers to a spark plug, a component of an internal combustion engine.
J'ai changé la bougie de ma voiture ce matin.
I changed the spark plug of my car this morning.
Again, 'bougie' is used to mean a candle, specifically a scented one, as a thoughtful gift.