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The differences can be studied over here.
Design patterns are common solutions to common design problems.
A flat file is the name given to text, which can be read or written only sequentially.
Stack is a place in the memory where value types are stored. Heap is a place in the memory where the reference types are stored.
A form is a representation of any window displayed in your application. Form can be used to create standard, borderless, floating, modal windows.
A user interface container that enables a user to work with more than one document at a time. E.g. Microsoft Excel.
A user interface that is created to manage graphical user interfaces and controls into single windows. E.g. Microsoft Word
A BLOB (binary large object) is a large item such as an image or an exe  represented in binary form.
ClickOnce is a new deployment technology that allows you to create and publish self-updating applications that can be installed and run with minimal user interaction.
It is a logical model for designing and querying database models. There are various ORM tools in the market like CaseTalk, Microsoft Visio for Enterprise Architects, Infagon etc.