curiousness vs foreign

curiousness is a noun but foreign is not a noun.

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

curiousness (noun)	foreign (noun)
the quality of being alien or not native
a state of active curiosity

curiousness (adjective)	foreign (adjective)
	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