taximan vs hack driver

taximan and hack driver both are nouns.

Word	Noun	Adjective	Verb	Adverb
taximan	Yes	No	No	No
hack driver	Yes	No	No	No

As nouns, taximan and hack driver are synonyms defined as:

Other synonyms of taximan include cabby, cabdriver, cabman, hack-driver, livery driver, taxidriver.

taximan (noun)	hack driver (noun)
someone who drives a taxi for a living	someone who drives a taxi for a living