letter vs destination

letter and destination both are nouns.

Word	Noun	Adjective	Verb	Adverb
letter	Yes	No	Yes	No
destination	Yes	No	No	No

letter (noun)	destination (noun)
a written message addressed to a person or organization	the ultimate goal for which something is done
the conventional characters of the alphabet used to represent speech	written directions for finding some location; written on letters or packages that are to be delivered to that location
an award earned by participation in a school sport	the place designated as the end (as of a race or journey)
a strictly literal interpretation (as distinct from the intention)
owner who lets another person use something (housing usually) for hire

letter (verb)	destination (verb)
mark letters on or mark with letters
set down or print with letters
win an athletic letter