What are two ways in which comets are different from other celestial bodies?

Another stark difference between these two celestial bodies is that while comets form tails when they pass through the inner solar system, asteroids don't. Asteroids are usually found in the asteroid belt, whereas comets predominantly orbit the sun in two regions: the Oort Cloud and the Kuiper Belt

good question. i'll be looking into that. (this is a joke sir)

answer; exploratory;