guard
The French word "garde" is used to refer to a person or group of people who are responsible for protecting or watching over something or someone. It can also refer to a military unit or a security force. In a more general sense, it can be used to refer to the act of protecting or watching over something or someone.
I keep a good memory of our meeting.
In this sentence, 'garde' is used to mean retain or keep. It is expressing that the speaker is retaining a good memory from their meeting.
She is looking after the children tonight.
In this context, 'garde' is used to mean looking after or caring for. It indicates that the subject of the sentence, 'Elle', is taking care of the children that evening.