opheleo (Greek #5623)
to be useful, i.e. to benefit
KJV usage: advantage, better, prevail, profit.
Pronounce: o-fel-eh'-o
Origin: from the same as 5622
oudeis (Greek #3762)
not even one (man, woman or thing), i.e. none, nobody, nothing
KJV usage: any (man), aught, man, neither any (thing), never (man), no (man), none (+ of these things), not (any, at all, -thing), nought.
Pronounce: oo-dice'
Origin: οὐδεμία (oo-dem-ee'-ah), and neuter οὐδέν (oo-den') from 3761 and 1520