Extra
Part of speech: noun
Definition: A run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball; in Australia referred to as a sundry an extra edition of a newspaper, which is printed outside of the normal printing cycle
Part of speech: adverb
Definition: To an extraordinary degree.
Part of speech: adjective
Definition: Beyond what is due, usual, expected, or necessary; additional; supernumerary. Extraordinarily good; superior; as extra work, extra pay.
Example sentence: I feel beautiful without makeup on, but when I do put makeup on, it just gives me this extra pop.
Unnecessary
Part of speech: adjective
Definition: Not needed or necessary.Done in addition to requirements; unrequired.
Example sentence: One should respect public opinion insofar as is necessary to avoid starvation and keep out of prison, but anything that goes beyond this is voluntary submission to an unnecessary tyranny.