tow car vs tow truck

tow car and tow truck both are nouns.

Word	Noun	Adjective	Verb	Adverb
tow car	Yes	No	No	No
tow truck	Yes	No	No	No

As nouns, tow car and tow truck are synonyms defined as:

tow car and tow truck: a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)

Other synonyms of tow car include wrecker.

tow car (noun)	tow truck (noun)
a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)	a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)