contact
The French word 'contact' is used exactly the same as in English. It can refer to the act of touching or communicating with someone or something. For example, 'J'ai perdu le contact avec mon ami' means 'I lost contact with my friend.' It can also be used as a noun to refer to a person who can provide information or assistance, as in 'Je cherche un contact dans cette entreprise' meaning 'I'm looking for a contact in this company.'
Don't lose contact with your friends.
This phrase is generally used to remind someone to keep in touch with their friends, implying that it's essential to maintain relationships to avoid solitude.
It's important to keep contact with former clients.
None
I haven't been in contact with her for years.
In this phrase, the speaker reveals that they lost touch with 'her' (a specific woman) years ago, suggesting a long period of separation or lack of communication.