yes there are twelve of them, all were part of the zodiac their used to be thirteen, but Ophuicus was disbanded. They are used to tell what your future is. This all depend s on the date you were born...
The Ecliptic describes our view of the stars in the sky that (approximately) traces out the apparent position of our Sun against distant stars over each year. The area known as the Zodiac is a band...
A zodiac constellation is simply as it says. The Zodiac are Aries, Gemini, Cancer, etc. every one of those are also a constellation. That is what makes them a Zodiac constellation. I hope that...