last vs conclusion

last and conclusion both are nouns.

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

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

Other hypernyms of last include ending, finish.

As nouns, last and conclusion are synonyms defined as:

Other synonyms of last include close, finale, finis, finish, stopping point.

last (noun)	conclusion (noun)
a person's dying act; the final thing a person can do	the act of ending something
holding device shaped like a human foot that is used to fashion or repair shoes	the act of making up your mind about something
the final stage or concluding parts of an event or occurrence	a position or opinion or judgment reached after consideration
a unit of capacity for grain equal to 80 bushels	an intuitive assumption
a unit of weight equal to 4,000 pounds	the last section of a communication
the last or lowest in an ordering or series	the proposition arrived at by logical reasoning (such as the proposition that must follow from the major and minor premises of a syllogism)
the temporal end; the concluding time	a final settlement
the time at which life ends; continuing until dead	event whose occurrence ends something
	the temporal end; the concluding time

last (adjective)	conclusion (adjective)
coming after all others in time or space or degree or being the only one remaining
occurring at or forming an end or termination
occurring at the time of death
highest in extent or degree
immediately past
conclusive in a process or progression
not to be altered or undone
most unlikely or unsuitable
lowest in rank or importance

last (verb)	conclusion (verb)
persist for a specified period of time
continue to live and avoid dying

last (adverb)	conclusion (adverb)
most recently
the item at the end