Difference between Unnecessary and Extra

UNNECESSARY vs EXTRA: NOUN

Something additional of the same kind
An additional edition of a newspaper (usually to report a crisis)
A minor actor in crowd scenes
Something more than is usual or necessary.
Something, such as an accessory on a motor vehicle, for which an additional charge is made.
A performer hired to play a minor part, as in a crowd scene in a film.
Something in addition to what is usual or expected; something over and above the usual course or charge, or beyond what is usual.
Specifically An edition or a copy of a newspaper issued at an unusual hour to convey special intelligence.
In cricket, a score or run not made from the bat, as a bye or a wide: usually in plural.
An edition of a newspaper issued at a time other than the regular one.
A run, as from a bye, credited to the general score but not made from a hit.
Something of an extra quality or grade.
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
A supernumerary or walk-on in a film or play
A special edition of a newspaper.

More than or beyond what is usual, normal, expected, or necessary: : superfluous.
Subject to an additional charge.
More than is needed, desired, or required
Further or added
Beyond what is due, usual, expected, or necessary; additional; supernumerary; also, extraordinarily good; superior
Extraordinarily good; superior; as extra work, extra pay.
Added to a regular schedule

Not necessary; needless; not required by the circumstances of the case; useless: as, unnecessary labor or care; unnecessary rigor.

Beyond the ordinary standard or measure; extraordinarily; unusually; uncommonly: as, this is done extra well; that is an extra high price.
More than what is usual, or than what is due, appointed, or expected; supplementary; additional; supernumerary: as, an extra price; an extra edition of a newspaper; extra diet; extra charges at a boarding-school.
A prefix of Latin origin, originally an adverb and preposition, meaning ‘outside, beyond.’ ;
Used in trade to denote a size somewhat larger than that, mentioned: as, extra elephant folio; extra foolscap octavo.

Unnecessarily, Uncalled for, Reserve, Surplus, Supernumerary, Spare, Supererogatory, Excess, Extra, Redundant, Inessential, Gratuitous, Superfluous, Unneeded, Needless

Supernumerary, Surplus, Other, Duplicate, Redundant, Outside, Unscheduled, Superfluous, Unneeded, Added, Unnecessary, Excess, Special, Spare, Additional

Unnecessarily, Uncalled for, Reserve, Surplus, Supernumerary, Spare, Supererogatory, Excess, Extra, Redundant, Inessential, Gratuitous, Superfluous, Unneeded, Needless

Supernumerary, Surplus, Other, Duplicate, Redundant, Outside, Unscheduled, Superfluous, Unneeded, Added, Unnecessary, Excess, Special, Spare, Additional

Lincoln undoubtedly hoped thus to avoid unnecessary friction.
This assessment, however, should not introduce unnecessary delay.
His memory of the subject made it unnecessary.
Term limits are unnecessary Term limits are completely unnecessary in the current political environment.
This would reduce unnecessary duplication, prevent wasting the time of additional participants and prevent exposing additional participants to unnecessary burden.
Accept No Unnecessary Risk: Unnecessary risk is that which carries no commensurate return in terms of benefits or opportunities.
This feature prevents an unnecessary credit check with the OCS and unnecessary monitoring of the call when the outcome is already determined.
The court should not require a party to respond to duplicative and unnecessary discovery requests because that would encourage unnecessary litigation.
Hardening involves implementing applicationlevel security approaches, removing unnecessary software, disabling unnecessary services, consulting guidelines and policies that are specific to your applic
This includes nervous or unnecessary hand motions, unnecessary tapping of feet or hands, etc.

COLLEGE EXTRA OFFER: To receive ESPN College Extra, customer must subscribe to a commercial base programming package.
Taking extra classes is best avoided because it may delay your graduation date, not to mention the obvious financial burden of the extra fees.
This is an extra activity that is now added in GTA San Andreas to make extra income for the player.
Although most people will only consider investing in a traditional visa, this could take some extra time and sometimes extra money to obtain.
But if you want to shrink your debt faster, you can make larger extra payments or extra ones.
Avoid waiting by the mailbox, making extra trips, and paying extra fees just so you can cash or deposit your tax refund.
It also has an extra wooden tray that slides out from underneath to give us extra space for meal prep.
Go the extra mile by having his gift personalized making it extra special for him.
Note that the extra level of indirection involves an extra memory allocation.
We paid extra for extra leg room and reclining seats.