Boulevard and Byway

Boulevard noun - A passage cleared for public vehicular travel.

Byway and boulevard are semantically related In some cases you can use "Byway" instead a noun "Boulevard".

Byway noun - A side road little traveled (as in the countryside).

Boulevard and byway are semantically related in direction topic. You can use "Boulevard" instead a noun "Byway", if it concerns topics such as course, road, pathway, path upon which travel occurs.