sermon vs baccalaureate

sermon and baccalaureate both are nouns.

Word	Noun	Adjective	Verb	Adverb
sermon	Yes	No	No	No
baccalaureate	Yes	No	No	No

As nouns, baccalaureate is a hyponym of sermon; that is, baccalaureate is a word with a more specific, narrower meaning than sermon:

sermon: an address of a religious nature (usually delivered during a church service)
baccalaureate: a farewell sermon to a graduating class at their commencement ceremonies

Other hyponyms of sermon include kerugma, kerygma, evangelism, homily, preachment.

sermon (noun)	baccalaureate (noun)
an address of a religious nature (usually delivered during a church service)	an academic degree conferred on someone who has successfully completed undergraduate studies
a moralistic rebuke	a farewell sermon to a graduating class at their commencement ceremonies