However, it's important to note that:
* "Palak" is the general Hindi word for spinach.
* "Saag" is the generic term for leafy greens.
So, while "palak saag" is commonly used to refer to Swiss chard in Hindi, it could also be used to refer to spinach.
To be more precise, you could refer to Swiss chard as "चार्ड साग" (pronounced "chard saag"), which translates to "chard greens."