Both develop into specialized cells.Then how are they different?
Expending on Gerando Furtado link
Totipotent cells can differentiate into three germ layers (endoderm, mesoderm, or ectoderm), into cells of the cytotrophoblast layer or syncytiotrophoblast layer of the placenta.
Pluripotent cells can differentiate into the three germ layers (endoderm, mesoderm, or ectoderm).
So totipotent cells develop into the all the cells of the embryonic body and fetal side of the placenta. While pluripotent cells can only develop into cells of the embryonic body.