Compare rectocele and rectal prolapse?

Vagina and anus: First rectum bulges into vagina, the second rectum slides out through the anus.

Different: In prolapse the rectum folds out of the anus. Recto else occurs with a weakness between the rectum and vagina.

Vaginal vs. Anal: A rectocele is bulging of the rectum towards the vagina (thus creating a "bulge" in the vagina, and possibly difficulties having a bowel movement). It is due to a weakening of the connective tissue between the rectum and vagina. Rectal prolapse is a condition in which the rectum loses its normal attachments inside the body, allowing it to telescope out through the anus, thereby turning it “inside out”.