roadman vs interpreter

roadman and interpreter both are nouns.

Word	Noun	Adjective	Verb	Adverb
roadman	Yes	No	No	No
interpreter	Yes	No	No	No

As nouns, interpreter is a hypernym of roadman; that is, interpreter is a word with a broader meaning than roadman:

Other hypernyms of roadman include salesman, representative, spokesperson, voice.

roadman (noun)	interpreter (noun)
a salesman who travels to call on customers	(computer science) a program that translates and executes source language statements one line at a time
a workman who is employed to repair roads	an advocate who represents someone else's policy or purpose
	someone who mediates between speakers of different languages
	someone who uses art to represent something