What makes a contract subject to the statue of frauds?

The Statute of Frauds is usually tripped if:

"contracts for the sale of an interest in land,

contracts for the sale of goods for $500 or more (under the U. C. C.),

contracts in consideration of marriage,

contracts that cannot be performed within one year of the contract being made,

contracts of suretyship,

contracts where an estate executor agrees to pay estate debts from his personal funds."