dq methodology and a work plan?

What is the difference between a methodology and a work plan? How are the two terms related?

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By definition, methodologies such as Agile, Waterfall, SCRUM, RAD and Six-Sigma contain guiding processes for those who are doing project management. The true definition is that methodologies are not software tool specific, however in today's software reliant world the reality is that the methodology and the organization's project management software tool are often heavily intertwined.

A system project's work plan is a mini-project plan or mini-statement of work (SOW). It focuses on a time-framed component of a project to produce a deliverable or meet a milestone as opposed to the entire project effort. A work plan acts as a script for action and gives all participants a central place for all relevant information and coordination (Gaw, 2010). The work plan provides a mechanism all parties can use to rehearse the work prior to the start time and it also provides a checklist from which to work once the event has commenced.