A promissory note is a contract in which the maker of the note promises to pay a sum to the payee. The sum is commonly repayable in periodic payments, as a lump sum at a fixed date in the future or or on demand of the payee.
A loan agreement is a contract between a borrower and lender which sets out the terms under which the loan and repayment is made.
An employment agreement is entered into between an employer and employee and typically contains a job description, duties and salary and benefits. An independent contractor agreement is a contract which sets out the terms under which an independent contractor provides services to another person.
A services contract sets out the terms under which a service provider provides services to another person.
An agreement in writing between two parties.