Yes.
Planetoids, or minor planets.
asteroids
The asteroids.
Minor planets, also known as asteroids, are rocky objects that orbit the Sun in the asteroid belt between Mars and Jupiter. Some other minor planets include the Trojan asteroids, which share an orbit with larger planets, and the Centaurs, which have unstable orbits that cross those of the giant planets.
Asteroids, some comets, and dwarf planets are classified as minor planets. Stars and galaxies are much larger than planets There are dwarf planets and these are Ceres Pluto and Eris.
Asteroids are called minor planets because they are celestial objects that orbit the sun just like planets do, but they are much smaller in size compared to planets. The term "minor" distinguishes them from the larger, more traditional planets in our solar system.
Not sure about ateroids. If you means asteroids, the Minor Planets Centre, the organisation responsible for collecting observational data for such objects, there was enough information for over 600,000 asteroids for them to have a formal designation - a number.
It is located in the space between the orbits of Mars and Jupiter. It is a conglomeration of minor planets also known as asteroids.
Minor planets, comets, asteroids, and dust.
They are sometimes called "major planets" to distinguish them from the "minor planets" (the asteroids) and "dwarf planets" like Pluto.
The ones we know of - and can get a decent albedo reading and spectroscopic analysis of - seem to have rocky cores covered with ices, by and large, but there is still much more not known about the minor planets than is known. Also note that this answer assumes by the "minor planets" you are talking primarily about the trans-Neptunian objects. If by "minor planets" you meant the larger asteroids of the asteroid belt, they are rocks, to keep it simple.
Asteroids larger than 1 km in diameter are known as planetesimals, while those over 100 km are considered minor planets. Asteroids larger than 1,000 km are usually classified as dwarf planets if they have enough mass for gravity to shape them into a round shape.