Main road and Thruway

Main road noun - A major road for any form of motor transport.

Thruway and main road are semantically related in highway topic. In some cases you can use "Thruway" instead a noun phrase "Main road", when it comes to topics like freeway.

Thruway noun - A broad highway designed for high-speed traffic.

Main road and thruway are semantically related in highway topic. Sometimes you can use "Main road" instead a noun "Thruway", if it concerns topics such as freeway.