Here's a breakdown:
* Constellation: A group of stars that appear to form a pattern when viewed from Earth. These patterns are not truly connected but are just a matter of perspective.
* Asterism: A smaller, less defined group of stars that may be part of a larger constellation. Examples include the Big Dipper (part of Ursa Major) and the Great Square of Pegasus (part of the constellation Pegasus).
Let me know if you have more questions!