basic vs radical

basic and radical both are nouns.

Word	Noun	Adjective	Verb	Adverb
basic	Yes	Yes	No	No
radical	Yes	Yes	No	No

basic (noun)	radical (noun)
(usually in the plural) a necessary commodity for which demand is constant	a character conveying the lexical meaning of a logogram
	(linguistics) the form of a word after all affixes are removed
	a person who has radical ideas or opinions
	(mathematics) a quantity expressed as the root of another quantity
	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule
	an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule

basic (adjective)	radical (adjective)
pertaining to or constituting a base or basis	especially of leaves; located at the base of a plant or stem; especially arising directly from the root or rootstock or a root-like stem
of or denoting or of the nature of or containing a base	of or relating to or constituting a linguistic root
reduced to the simplest and most significant form possible without loss of generality	arising from or going to the root or source
serving as a base or starting point	(used of opinions and actions) far beyond the norm
	markedly new or introducing radical change