Calvinistical vs Calvinist

Calvinistical is not a noun while Calvinist is a noun.

Word	Noun	Adjective	Verb	Adverb
Calvinistical	No	Yes	No	No
Calvinist	Yes	Yes	No	No

As adjectives, Calvinistical and Calvinist are synonyms defined as:

Calvinistical and Calvinist: of or relating to or characteristic of Calvinism or its adherents

Other synonyms of Calvinistical include Calvinistic.

Calvinistical (noun)	Calvinist (noun)
	an adherent of the theological doctrines of John Calvin

Calvinistical (adjective)	Calvinist (adjective)
of or relating to or characteristic of Calvinism or its adherents	of or relating to or characteristic of Calvinism or its adherents