An algorithm and a flowchart are both tools used to design programs, particularly in computer programming. Here are the definitions and differences between the two:

Algorithm

• An algorithm is a step-by-step method for solving a problem. It refers to a set of instructions that define the execution of work to get the expected results.
• It is a procedure or set of rules that defines how a program is to be executed. It is a set of instructions for solving a well-defined computational problem.
• It is mainly used for mathematical and computer programs.
• It is complex to understand and does not use any kind of geometrical diagram.
• It is easy to debug and follow the pseudo-code for the program.

Flowchart

• A flowchart is a graphical representation of an algorithm. It uses various symbols to show the operations and decisions to be followed in a program. It flows in sequential order.
• It is a pictorial representation of the steps a program takes to process data. It makes use of symbols that are connected among them to indicate the flow of information and processing.
• It can be used to describe all sorts of processes: business, educational, personal, and algorithms. So flowcharts are often used as a program planning tool to organize the programs step-by-step process visually.
• It is easy to understand and more user-friendly. It uses different patterns, shapes, and standard symbols.
• It is hard to debug and follows rules to be constructed.

In summary, an algorithm is a step-by-step method for solving a problem, while a flowchart is a graphical representation of an algorithm. An algorithm is mainly used for mathematical and computer programs, while flowcharts can be used to describe all sorts of processes. An algorithm is complex to understand and does not use any kind of geometrical diagram, while a flowchart is easy to understand and more user-friendly, using different patterns, shapes, and standard symbols.