* Swing (as in a playground swing): balançoire
* Swing (as in a musical genre): swing (pronounced "swaŋ")
* Swing (as in to swing a bat/golf club): balancer
* Swing (as in to swing a door open): ouvrir en grand (to open wide)
* Swing (as in to swing a deal): conclure (to conclude)
To be more precise, it's best to provide more context! 😄