conclusion vs happening

conclusion and happening both are nouns.

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

As nouns, happening is a hypernym of conclusion; that is, happening is a word with a broader meaning than conclusion:

Other hypernyms of conclusion include natural event, occurrence, occurrent.

conclusion (noun)	happening (noun)
the act of ending something	an event that happens
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