thruway vs expressway

thruway and expressway both are nouns.

Word	Noun	Adjective	Verb	Adverb
thruway	Yes	No	No	No
expressway	Yes	No	No	No

As nouns, thruway and expressway are synonyms defined as:

Other synonyms of thruway include freeway, motorway, pike, state highway, superhighway, throughway.

thruway (noun)	expressway (noun)
a broad highway designed for high-speed traffic	a broad highway designed for high-speed traffic