Both the Earth and Sun are roughly spherical and rotate on an axis.
Both have satellite bodies and revolve around a larger mass (Earth around the Sun in the solar system, the Sun as part of the Milky Way Galaxy).
Both have mass that imparts gravity.
Although the Earth has a higher percentage of heavier atoms (iron, aluminum, oxygen) compared to the Sun (mostly hydrogen, some helium) both contain at least some of the same chemical elements.
Each is also hotter at its core than its surface.
The moon is revolving around Earth, so sometimes the Moon is between the Sun and Earth and Earth is between the moon and sun.
One AU is the distance between the Earth and the Sun.
Venus and Mars
The planets that orbit between the Earth and the Sun are Mercury and Venus.
You have a problem. When the Moon passes between the Sun and the Earth you have a solar eclipse. When the Earth passes between the Sun and the Moon you have a lunar eclipse. When the Sun passes between the Moon and the Earth we're all dead, as the Sun would be 93 million miles too close.
The Sun, Moon, and Earth are all aligned in both.
The Sun, Moon, and Earth are all aligned in both.
Earth orbits the sun - all the other planets do as well.
They are both "rocky" planets and orbit closer to the Sun than the Earth.
One similarity between Mercury and Venus is that they are both smaller than Earth. They are also both closer to the sun than Earth.
They are stars.
Earth and Neptune are very different, but share a few similarities. Both orbit the Sun in the same direction. both are a round shape and rotate on their axis. Both planets appear to be blue when viewed from a distance.
they both have a sun
The moon is revolving around Earth, so sometimes the Moon is between the Sun and Earth and Earth is between the moon and sun.
One AU is the distance between the Earth and the Sun.
The Sun is NEVER between the Earth and the Moon. When the Moon is between the Earth and the Sun, this is called a Solar Eclipse. When the Earth is between the Moon and the Sun, this is called a Lunar Eclipse.
They are both in space