A warranty deed guarantees that the grantor owns title. The quitclaim deed transfers only that interest in the real property which the grantor actually has. A quit claim deed contains no warranties and the seller doesn't have liability to the buyer for other recorded claims on the property. The purchaser takes the property subject to existing taxes, assessments, liens, encumbrances, covenants, conditions, restrictions, rights of way and easements of record. The quitclaim is often used among family members or from one joint owner to the other when there is little question about existing ownership, or just to clear the title.
Land means more than the surface of the earth. It includes the soil and all things of a permanent nature attached to the ground such as trees. Land also includes the waters on the ground and things beneath the surface such as minerals.