conclusion vs windup

conclusion and windup both are nouns.

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

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

conclusion (noun)	windup (noun)
the act of ending something	a concluding action
the act of making up your mind about something
a position or opinion or judgment reached after consideration
an intuitive assumption
the last section of a communication
the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)
a final settlement
event whose occurrence ends something
the temporal end; the concluding time

conclusion (adjective)	windup (adjective)
	operated by a mechanism