To remove the skin of a potato or an orange

One word substitute is Peel.

Rinse: wash (something) with clean water to remove soap, detergent, dirt, or impurities.
Peel: remove the outer covering or skin from (a fruit, vegetable, or prawn).
Scrub: rub (someone or something) hard so as to clean them, typically with a brush and water.
Remove: take (something) away or off from the position occupied.