What is the appearance difference between a hemmoroid and gential warts on the anus?

Lots: A hemorrhoid is an enlarged blood vessel in the rectum. There are 2 sets one internally and one externally. The external ones are usually painful and palpable when swollen. Perianal warts are skin lesions caused by a sexually transmitted virus. They can be painful and itch. And each is treated differently so see your physician.

Virus/ vessel: Hemorrhoids are engorged venous plexus which could be internal and external and are associated with pain or bleeding. Genital warts are virus induced skin lesions usually multiple, painless and not associated with bleeding.