conclusion vs finis

conclusion and finis both are nouns.

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

As nouns, conclusion and finis are synonyms defined as:

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

conclusion (noun)	finis (noun)
the act of ending something	the concluding part of any performance
the act of making up your mind about something	the temporal end; the concluding time
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