minister vs ministerial

minister is a noun but ministerial is not a noun.

Word	Noun	Adjective	Verb	Adverb
minister	Yes	No	Yes	No
ministerial	No	Yes	No	No

minister (noun)	ministerial (noun)
the job of a head of a government department
a person authorized to conduct religious worship
a diplomat representing one government to another; ranks below ambassador
a person appointed to a high office in the government

minister (adjective)	ministerial (adjective)
	of or relating to a government minister or ministry
	of or relating to a minister of religion or the minister's office

minister (verb)	ministerial (verb)
work as a minister
attend to the wants and needs of others