interpreter vs roadman

interpreter and roadman both are nouns.

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

As nouns, roadman is a hyponym of interpreter; that is, roadman is a word with a more specific, narrower meaning than interpreter:

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