Final answer:
The 'introduction' is the beginning part of a document which provides an overview, while 'project by month' is likely a timeline or Gantt chart of project tasks organized monthly.
Step-by-step explanation:
The labels 'introduction' and 'project by month' typically refer to different sections of a report or project plan. The introduction is often the beginning part of a document, providing an overview of the topics that will be discussed, the purpose of the report, and any relevant background information. On the other hand, ‘project by month’ likely indicates a schedule or breakdown of project tasks or events organized on a monthly basis, often in the form of a timeline or Gantt chart to illustrate when different components of a project are to be initiated and completed over time.