Raita and Tzatziki sauces

Raitia is Indian (Hindu) and Tzatziki is Greek, they are both tangy sauces with yogurt.  But their fans insist they are quite different in flavor.  They both garnish foods such as Falafel or Gyros quite well.

Raita

Ingredients --  Vegan if you don't mind yogurt
Mix all ingredients well.

Tzatziki

Ingredients --  Vegan if you don't mind yogurt
Combine all wet ingredients, add spices last.  Mix well until smooth.  Allow time for the flavors to marry.