synchronic vs contemporary

synchronic is not a noun while contemporary is a noun.

Word	Noun	Adjective	Verb	Adverb
synchronic	No	Yes	No	No
contemporary	Yes	Yes	No	No

synchronic (noun)	contemporary (noun)
	a person of nearly the same age as another

synchronic (adjective)	contemporary (adjective)
concerned with phenomena (especially language) at a particular period without considering historical antecedents	belonging to the present time
occurring or existing at the same time or having the same period or phase	characteristic of the present
(of taxa) occurring in the same period of geological time	occurring in the same period of time