Leads : Represents a prospect or lead.
Accounts : Represents an organization or person involved with your business such as customers, competitors or partners.
Contacts : Represents a contact, which is a person associated with an account.
Opportunity : Represents an opportunity, which is a sale or pending deal.
Product : Represents a product that your org sells.
Opportunity Line Item : Represents an opportunity line item, which is a member of the list of Product2 products associated with an Opportunity.
Price Books : Represents to establish different pricing structures for products.
Quote : Represents a quote, which is a record showing proposed prices for products and services.
Order : Represents an order associated with a contract or an account. An order record is an agreement between a company and a customer to provision services or deliver products with a known quantity, price, and date.
Contract : Represents a contract(Business Legal Agreement) associated with an Account.
Campaigns : Represents and tracks a marketing campaign, such as a direct mail promotion, webinar, or trade show.
Campaign Members : Represents the association between a campaign and either a lead or a contact.