Is 'voter fraud' the same as 'electoral fraud'? If not, why not?

When I hear the word "electoral", I think of the electoral college and the two-step election process by which we choose our Presidents. In that context, the only form of electoral fraud I can think of is when an elector misrepresents who he is going to vote for, and votes for someone other than the candidate he is supposed to vote for.

Other than that, according to Merriam-Webster, the word "electoral" means "of or relating to election <an electoral system>", so electoral fraud is just another way of saying election fraud.

Electoral fraud is an umbrella term for anything that damages the integrity of the electoral process. Voter fraud is but one form of electoral fraud, dealing specifically with a voter who is ineligible, votes twice, votes under other people's names, etc. The larger electoral fraud category can also include things like ballot stuffing, ballot destruction, voter disenfranchisement, and so on.

Voter *registration* fraud straddles the line between being electoral fraud and being something else altogether; if it's caught and the registration is rejected, the integrity of the system was not damaged, so it's not electoral fraud at all, full-stop. If it isn't caught, and the person becomes successfully registered when they shouldn't be, then it is electoral fraud, and if that person actually then votes, it becomes the more specific subset of voter fraud.

Voter fraud: the excuse some state legislators use to commit election fraud.