Fair can be used as a noun, and adverb or an adjective. Fare can be used as a verb or a noun. Fair as an adjective – means pleasing appearance, just and unbiased, light tone complexion. Fare as a verb – To get along, to happen or to go, perform is a specific way, or to succeed.

We went to a craft fair at the weekend. But it can also be a carnival with rides, games, and stalls: I went to the fair and won a goldfish! In all the cases above, though, the correct spelling is “fair.”