molecule vs radical

molecule and radical both are nouns.

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

molecule (noun)	radical (noun)
(physics and chemistry) the simplest structural unit of an element or compound	a character conveying the lexical meaning of a logogram
(nontechnical usage) a tiny piece of anything	(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

molecule (adjective)	radical (adjective)
	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 relating to or constituting a linguistic root
	arising from or going to the root or source
	(used of opinions and actions) far beyond the norm
	markedly new or introducing radical change