Various.

A deed is any document affecting title, that is, proof of ownership, of the land in question. The land may or may not have buildings upon it. Common types of deed include conveyances, mortgages, bonds, grants of easements, wills and administrations.

Conveyances are transfers of land from one party to another, usually for money. Early forms of conveyance include feoffments, surrenders and admissions at manor courts (if the property was copyhold), final concords, common recoveries, bargains and sales and leases and releases.

A bargain and sale was an early form of conveyance often used by executors to convey land. The bargainee, or person to whom the land was bargained and sold, took possession, often referred to as becoming 'seised' of the land.

Source: British Records Association Guidelines 3: How to interpret deeds (available online).