Since you're curious: in the original Latin you'd be looking for words of 3rd declination that have "ent" and, depending on case, end with -ens (contraction of

Since you're curious: in the original Latin you'd be looking for words of 3rd declination that have "ent" and, depending on case, end with -ens (contraction of ent+s), -entis, -entia or something like that. I guess English took (ens -> ence) and (entia + l -> ential).