Are red lentils processed brown lentils?

yes u can but the colour is diffrent one is black and one is red

According to wikipedia they are different varieties of the same plant (lens culinaria). Red lentils are brown (masoor) lentils with their husks removed, so they will cook faster than green lentils.

Thuvaram Paruppu

Brown Lentils are like a type of soup. They look like flat peas, and can probably be found near the dry pasta area in a store.

South Western Asia and Northern Syria. There is archaeological evidence of their cultivation as early as 6,000 B.C. Red lentils specifically are a variant of the same species, as are all other...