Answer:
applying different formatting to text within a document
Step-by-step explanation:
A section break is used to separate a documents into different sections, thereby making it possible to apply different formats to the sections such as having different headers and footers, using a single column and double column for different sections, applying different page numbers e.t.c.
A page break is used to end a page and start a new page even if the old page has not been filled with text.