However, it's important to note that "koththamalli" in Tamil can also refer to coriander, which is a different herb altogether. To be specific, you can use the term கொத்தமல்லித் தாவரம் (koththamalli thavaram) which literally means "cress plant".
Here are some other Tamil words for garden cress:
* சீரகம் (seeragam) - This is a more general term for any type of leafy green herb, and it can sometimes be used to refer to garden cress.
* ஆடு தாவரம் (aadu thavaram) - This literally means "goat plant," and it's a less common name for garden cress.
Ultimately, the best way to be sure that you are communicating clearly is to use the specific term கொத்தமல்லித் தாவரம்.