1. mustard (からし) karashi, Chinese name is mustard.

2.Wasabi means mustard in Chinese, also called horseradish.

The difference is:

Mustard seed (からし):) It is yellow and is usually used as a condiment for western cakes.

Yellow mustard, also known as mustard seed powder and sweet potato, is native to China and is made by grinding mustard seeds. It has a pungent smell, but it is lighter than green mustard.

Wasabi (わさび):) It is green and is generally used as a seasoning for sashimi and other aspects.

Now it is used by barbecue shops to make dried squid and delicious fish fillets.

Originally from Japan, wasabi is green, its pungent smell is stronger than that of yellow mustard, and it has a unique aroma.