mung beans or mung lentils

Yesterday I was busy in shopping. I went in to a health shop in Ealing. I was looking for mung beans and aduka beans as Jonathan and Wendy are using them and finding them helpful. I was amazed to find out that these beans we call lentils. And we cook them as curry and eat them with boiled rice or bread. So these beans can be bought from an Indian grocery shop cheaper than the health shop.It would not hard for me to eat them because mung beans (lentils) curry with rice is my favorite dish already.