synchronic vs synchronal

synchronic and synchronal both are adjectives.

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

As adjectives, synchronic and synchronal are synonyms defined as:

synchronic and synchronal: occurring or existing at the same time or having the same period or phase

Other synonyms of synchronic include synchronous.

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