convergence vs convergent

convergence is a noun but convergent is not a noun.

Word	Noun	Adjective	Verb	Adverb
convergence	Yes	No	No	No
convergent	No	Yes	No	No

convergence (noun)	convergent (noun)
the act of converging (coming closer)
the approach of an infinite series to a finite limit
a representation of common ground between theories or phenomena
the occurrence of two or more things coming together

convergence (adjective)	convergent (adjective)
	tending to come together from different directions