kerugma vs preaching

kerugma and preaching both are nouns.

Word	Noun	Adjective	Verb	Adverb
kerugma	Yes	No	No	No
preaching	Yes	No	No	No

As nouns, preaching is a hypernym of kerugma; that is, preaching is a word with a broader meaning than kerugma:

kerugma: preaching the gospel of Christ in the manner of the early church
preaching: an address of a religious nature (usually delivered during a church service)

Other hypernyms of kerugma include discourse, sermon.

kerugma (noun)	preaching (noun)
preaching the gospel of Christ in the manner of the early church	an address of a religious nature (usually delivered during a church service)
	a moralistic rebuke