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.

An assignment of term, or assignment to attend the inheritance, was an assignment of the remaining term of years in a mortgage to a trustee after the mortgage itself has been redeemed. An assignment of a lease is the transfer of the rights laid out in the lease to another party, usually for a consideration (a sum of money).

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