valency vs multivalent

valency is a noun but multivalent is not a noun.

Word	Noun	Adjective	Verb	Adverb
valency	Yes	No	No	No
multivalent	No	Yes	No	No

valency (noun)	multivalent (noun)
(chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)
(biology) a relative capacity to unite or react or interact as with antigens or a biological substrate
the phenomenon of forming chemical bonds

valency (adjective)	multivalent (adjective)
	used of the association of three or more homologous chromosomes during the first division of meiosis
	having more than one valence, or having a valence of 3 or higher
	having many values, meanings, or appeals