Are galaxies, stars and constellations the same thing?

1, most of what the naked eye sees is in the Milky Way, and the rest, such as the extragalactic galaxy M3 1 of Andromeda and the small Magellanic cloud visible in the southern hemisphere, are extragalactic galaxies;

What the naked eye can see may be stars, planets or individual asteroids. In addition, it is said that someone can see Ganymede, which is a satellite of Jupiter, but my eyesight is not good. I definitely can't see it. The only galaxies visible to the naked eye are Andromeda M3 1 and the small Magellanic Cloud visible in the southern hemisphere, but they are all light spots, not bright spots. In addition, comets and some clusters and stars.

Constellation was formed by the ancients connecting the stars in the sky with imaginary lines. The stars that make up the constellations are not related to each other, but the galaxies are a whole, and there are a large number of extragalactic galaxies in each constellation;

As mentioned above, constellations were formed by the ancients connecting the stars in the sky with imaginary lines. The stars that make up the constellation are not interrelated, but a projection relationship. They are only in one direction, and the distance between them is very far.