congo red vs solution

congo red and solution both are nouns.

Word	Noun	Adjective	Verb	Adverb
congo red	Yes	No	No	No
solution	Yes	No	No	No

congo red (noun)	solution (noun)
a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)	the successful action of solving a problem
	a method for solving a problem
	a statement that solves a problem or explains how to solve the problem
	the set of values that give a true statement when substituted into an equation
	a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution