As adjectives the difference between superfluous and nonessential
is that superfluous
is in excess of what is required or sufficient while nonessential
is not required; not essential.
As a noun nonessential is
something that is not essential.
In excess of what is required or sufficient.
- With a full rain suit, carrying an umbrella may be superfluous .
* excessive, extraneous, extra, pleonastic, supernumerary, surplus, unnecessary, extravagant
Something that is not essential.