I am pretty sure that Cambria knows two words now. "Mama" and "to nurse." The mama word is verbal and she says over and over "Mamamamama," usually when she's hungry. The nurse word is actually a baby sign where she curls her hand over and over. Usually she'll do both "mamamamamama" and curl her little hand.
I thought "baba" was going to be first since it was the first noise she made, but looks like Mama won. She says Baba, but I don't think it's consistent enough to really know if she's talking about me or just babbling.