conclusion vs speech

conclusion and speech both are nouns.

Word	Noun	Adjective	Verb	Adverb
conclusion	Yes	No	No	No
speech	Yes	No	No	No

conclusion (noun)	speech (noun)
the act of ending something	the mental faculty or power of vocal communication
the act of making up your mind about something	(language) communication by word of mouth
a position or opinion or judgment reached after consideration	the act of delivering a formal spoken communication to an audience
an intuitive assumption	words making up the dialogue of a play
the last section of a communication	a lengthy rebuke
the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)	the exchange of spoken words
a final settlement	your characteristic style or manner of expressing yourself orally
event whose occurrence ends something	something spoken
the temporal end; the concluding time