arc / ark / arque [ark]
arc – n. & v. – n. – 1. Geometry, part of the circumference of a circle or any other curve; 2. electricity – a luminous discharge between two electrodes; v. to form an arc
ark– n. – a chest or box, especially used for Noah’s ark, the Holy Ark, and the Ark of the Covenant
arque – adj. – 1. ballet, bow-legged; 2. a road that is higher in the middle than at either side; 3. a ship that is higher in the middle and lower at stem and stern; 4. curved