keynote address vs keynote speech

keynote address and keynote speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
keynote address	Yes	No	No	No
keynote speech	Yes	No	No	No

As nouns, keynote address and keynote speech are synonyms defined as:

keynote address (noun)	keynote speech (noun)
a speech setting forth the keynote	a speech setting forth the keynote