catechetical vs theology

catechetical is not a noun while theology is a noun.

Word	Noun	Adjective	Verb	Adverb
catechetical	No	Yes	No	No
theology	Yes	No	No	No

catechetical (noun)	theology (noun)
	the learned profession acquired by specialized courses in religion (usually taught at a college or seminary)
	a particular system or school of religious beliefs and teachings
	the rational and systematic study of religion and its influences and of the nature of religious truth

catechetical (adjective)	theology (adjective)
of or relating to or involving catechesis