borderline vs minimum

borderline and minimum both are nouns.

Word	Noun	Adjective	Verb	Adverb
borderline	Yes	Yes	No	No
minimum	Yes	Yes	No	No

borderline (noun)	minimum (noun)
a line that indicates a boundary	the point on a curve where the tangent changes from negative on the left to positive on the right
	the smallest possible quantity

borderline (adjective)	minimum (adjective)
of questionable or minimal quality	the least possible