finally vs in conclusion

finally and in conclusion both are adverbs.

Word	Noun	Adjective	Verb	Adverb
finally	No	No	No	Yes
in conclusion	No	No	No	Yes

As adverbs, finally and in conclusion are synonyms defined as:

Other synonyms of finally include last, lastly.

finally (adverb)	in conclusion (adverb)
as the end result of a succession or process	the item at the end
after an unspecified period of time or an especially long delay
the item at the end