Astrology vs. Astronomy? What's the difference?

Astrology is a tool we use to plan events according to the astrological placements of the Sun, the Moon, and the plants in the 12 signs of the zodiac. The planetary movements do not cause events; rather, they explain the path, or flow,” that events tend to follow.
Astronomy is the study of the actual placement of the known planets and constellations. (The placement of the planets in the signs of the zodiac is not the same astrologically and astronomically.)”