Difference between Unnecessary and Supernumerary

UNNECESSARY vs SUPERNUMERARY: NOUN

A person serving no apparent function
An extra or walk-on in a film or play; spear-carrier.
A civil designation for somebody who works in a group, association or public office, without forming part of the regular staff; those distinguished from numerary. (For example, supernumerary judges are those who help the regular judges when there is a surplus amount of work.)
A person or thing beyond what is necessary or usual; especially, a person employed not for regular service, but only to fill the place of another in case of need; specifically, in theaters, a person who is not a regular actor, but is employed to appear in a stage spectacle.
One that is in excess of the regular, necessary, or usual number.
An actor without a speaking part, as one who appears in a crowd scene.
Theat., one not belonging to the regular company, who appears on the stage, but has no lines to speak. Often colloquially abbreviated super and supe.
A person or thing beyond the number stated, or beyond what is necessary or usual; especially, a person not formally a member of a regular body or staff of officials or employees, but retained or employed to act as an assistant or substitute in case of necessity.
Specifically— A military officer attached to a corps or arm of the service where no vacancy exists. Such an officer receives, in the United States army, the rank of brevet second lieutenant, or additional second lieutenant.
A minor actor in crowd scenes

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

Exceeding a number stated or prescribed: as, a supernumerary officer in a regiment.
Exceeding a necessary or usual number.

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

Excessive, Residual, Additional, Temporary, Equivalent, Spear carrier, Unneeded, Unnecessary, Spare, Extra, Surplus, Excess, Supererogatory, Redundant, Superfluous

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

Excessive, Residual, Additional, Temporary, Equivalent, Spear carrier, Unneeded, Unnecessary, Spare, Extra, Surplus, Excess, Supererogatory, Redundant, Superfluous

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.

Is supernumerary chromatin involved in gametophytic apomixis of polyploid plants?
Supernumerary Pool teachers will receive full salary and insured benefits.
Supernumerary teeth in the pharyngeal dentition of slow developing zebrafish.
Fake hands in action: embodiment and control of supernumerary limbs.
FISH analysis of supernumerary ring chromosome in dermatofibrosarcoma protuberans.
Carcinoma of supernumerary breast vulva with bilateral mammary cancer.
Colleges are NOT covered under the Supernumerary Quota.
Supernumerary fissures usually separate segments rather than lobes.
Supernumerary births consequently add only to your mortality.
When it is fully formed with a supernumerary metacarpal and functional, it may be impossible to determine which of the fingers is supernumerary.