Final answer:
A basilica-plan church has a long axis focusing on the altar, while a central-plan church is characterized by equal measurements from a center. Central-plan churches find their architectural precedents in Classical architecture, such as the Pantheon.
Step-by-step explanation:
The main difference between a "basilica-plan" church and a "central-plan" church is in their architectural layout and design. A basilica-plan church has a long axis that focuses attention on the altar and is more practical in its layout. On the other hand, a central-plan church is characterized by measurements that are equidistant from a center and is usually circular or based on a Greek cross shape. The central-plan church finds its architectural precedents in Classical architecture, such as the Pantheon, which influenced High Renaissance architects.