Twitter is not a necessity.
The plural of necessity is necessities.
The possessive form of the noun necessity is necessity's.
necessity
necessity
Necessity.
necessity
Fort Necessity (fort nessessitee)
There are four syllables in the word 'necessity'.
Fort Necessity
There is no reason or necessity to ban firearms.
water is a necessity for living.
Villains by Necessity was created in 1995.