Learn in the textbookControl Structures and Notation Methods
DefinitionA flowchart (フローチャート) is the English name for the flow diagram (流れ図), and both refer to the same diagram.
ExplanationOnly the name differs: the symbols and the way you read them are the same as for a flow diagram. It is used not only for program steps but also for mapping out how work proceeds.
Memory hookTranslate flow and chart word for word into Japanese and you get 流れ図.