Extra
Extra noun - Something adding to pleasure or comfort but not absolutely necessary.
Usage example: the motel is clean and comfortable, but there are no extras
Necessity
Necessity noun - Something necessary, indispensable, or unavoidable.
Usage example: on any road trip, accurate maps are a necessity
How words are described
Both words in one sentence
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Almost a necessity, as these games are always rife with extra dungeons, bonus bosses and multiple endings.
Source: New Game+ -
On the "Back From The Dead" DVD, David explains that another band had done a song titled "Tonight I'm Gonna Rock You," hence the necessity of an extra "Tonight".
Source: Film / This Is Spinal Tap - Sometimes the woman chooses both out of necessity: in many countries the wife is expected to work in order to have an extra income, often essential just to make ends meet.
Source: Career Versus Man
Cite this Source
Necessity and Extra. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/extra/necessity
Extra & Necessity. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/extra/necessity>.
Necessity or Extra. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/extra/necessity.
Google Ngram Viewer shows how "extra" and "necessity" have occurred on timeline