wails / wales / whales [weilz]
wails – n. & v. – n. pl. – long, plaintive sounds; v. 3rd sing. of wail – cries expressing pain or sorrow
wales – n. pl. & v. – 3rd pers. sing. of wale – n. pl. – ridges of soil or rock; v. – chooses, selects, marks or secures with a ridge, wheal etc.
whales – n. pl. & v. – n. – any of the larger fish-like marine mammals of the order Cetacea; v. – hunts marine mammals