dear ladies, pls tell me what is chia seed, subja seed and kalonji? and why are they used? pls tell me their uses separately. they look similar in pictures. i read that all of these seeds are having high health benefits so would like to know more about these and want to use it in regular diet. i have been eating raw kalonji (1tsp) with water daily from last one week. is it okay to eat raw kalonji (black seed) daily?