Round:
Reminds me of cookies. Especially chocolate chip, which would be double round.
Round is illustrative of onomatopoeia. It is smooth as an "R" and curvy as the loud vowel "ow," resonant as a mound, grounded in its own sharpened sound.
(This all rhymes.)
A luxuriousness of line, an incessant curvature.
Round is like the electronica band Tortoise, and like Reggae. Round is almost bubblicious, but not quite so bulbous and bulgy.

According to Feng Shui, round is far more preferred to pointy shapes, as they shock and scare our spirits, and do not leave us at ease.