Crossroad and Throughway

Crossroad noun - A junction where one street or road crosses another.

Throughway and crossroad are semantically related In some cases you can use "Throughway" instead a noun "Crossroad".

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

Crossroad and throughway are semantically related in road topic. Sometimes you can use "Crossroad" instead a noun "Throughway", if it concerns topics such as path upon which travel occurs.