Another word for the highway is the interstate, freeway or turnpike.
Tornado
street, highway, road, avenue.
The word originates from Old English heiweg "main road from one town to another."
Road Avenue Lane Highway
Synonymous with? No. That would mean highway laws and constitutional law were the same, and interchangeable with one another. Maybe the word you're looking for is "analogous"?
The word highway is a thing.
The word highway can be written out fully as Highway or it can also be abbreviated. The abbreviation for highway is hwy.
I drove on a highway to get to my destination.
The plural form for the singular highway is highways.
The noun highway is a singular, common, concrete, compound noun, a word for a thing.
Interstate
One word that can go in front of "way" is "highway." Another example is "gateway." Both terms are commonly used to describe types of roads or paths.