ending vs conclusion

ending and conclusion both are nouns.

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

As nouns, ending and conclusion are synonyms defined as:

Other synonyms of ending include termination.

As nouns, ending and conclusion are synonyms defined as:

Other synonyms of ending include close, closing, end.

As nouns, ending and conclusion are synonyms defined as:

Other synonyms of ending include finish.

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

ending (noun)	conclusion (noun)
the act of ending something	the act of ending something
the end of a word (a suffix or inflectional ending or final morpheme)	the act of making up your mind about something
the last section of a communication	a position or opinion or judgment reached after consideration
event whose occurrence ends something	an intuitive assumption
the point in time at which something ends	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