These two terms have a tendency to confuse writers because they both deal with a similar subject: assistance. Aid can be used as either a noun or a verb and refers to the assistance you get. Aide is a noun and refers to the person that provides relief or assistance to others.

Which is correct aid or aide?

Aid (as a noun) means “help” or “assistance.” As a verb it means “to help” or “to assist.” An aide is an assistant.

Does aid have an E at the end?

aid in your writing. If you have so much that you need a helper, you might get an aide. Aide and helper both have “E's” in them. You could also remember that aide is not a verb, so you will usually see an article nearby.