unfamiliar vs foreign

unfamiliar and foreign both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unfamiliar	No	Yes	No	No
foreign	No	Yes	No	No

unfamiliar (adjective)	foreign (adjective)
not known or well known	relating to or originating in or characteristic of another place or part of the world
	of concern to or concerning the affairs of other nations (other than your own)
	not belonging to that in which it is contained; introduced from an outside source
	not contained in or deriving from the essential nature of something