The four planets of the solar system that are closest to the sun (Mercury, Venus, Earth, and Mars); also called the terrestrial planets.

The faster moving planets that are in the inner part of the solar system. Includes the Sun, Mercury, Venus, and Mars; usually the Moon is included. These planets generally indicate parts of the personality that are well-known to the ego and relate to everyday behavior patterns. Also known as personal planets.

the four solid, rocky planets closest to the Sun, Mercury, Venus, Earth, and Mars

The small, rocky planets that orbit close to the sun: Mercury, Venus, Earth, and Mars.

The inner planets are those planets that orbit close to the sun. They are: Mercury, Venus, Earth, and Mars. They are relatively small, composed mostly of rock, and have few or no moons.

Mercury and Venus are planets internal to the Earth orbit

The Sun and those planets whose orbits lie between the Sun and Asteroid Belt, namely Mercury, Venus, Moon and Mars. Alternatively termed minor planets.