Basic necessities/necessity means something thing that you usually need or have.
The plural of necessity is necessities.
The possessive form of the noun necessity is necessity's.
Twitter is not a necessity.
necessity
necessity
Necessity.
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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.