What are the differences between plaster and drywall in terms of their composition, installation process, and durability?

Plaster is a traditional building material made of gypsum, sand, and water, while drywall is made of gypsum sandwiched between layers of paper. Plaster is applied wet and requires skilled labor for installation, while drywall is easier to install and can be done by DIYers. Plaster is more durable and can last for decades, while drywall is more prone to damage but can be easily repaired.