Hi Senthil

Everything Doug said is true. So let me take a completely different point of
view, and consider what sections are *not* used for.

You can imagine a document that includes several major headings. So you may
be writing about transport, and you could have major headings like Cars,
Railways, Airlines. Your material is grouped in some meaningful way under
these headings. We could imagine the heading Cars and the text under the
Cars heading as being a unit. Word has no formal term for such a thing, but
let's say that the content between the beginning of one heading and the
beginning of the next heading is a "chapter". So a "chapter" is a semantic
idea. It's about how the text is constructed and how we group text in a
meaningful way.

A section in Word terms has no semantic use. Sections are entirely about
formatting, as Doug explained: margins, page orientation, headers and
footers, columns, borders and so on. So one "chapter" might span several
sections. And one section might span several "chapters". Sections and
"chapters" are fundamentally unrelated to one another.

I think this distinction matters because in ordinary language we might refer
to the Cars section, and we would be referring to the Cars heading and the
text under that heading. But a Word section is about formatting, not about
meaning. You don't need a new Word section for every "chapter".

Hope this helps.

Shauna Kelly.  Microsoft MVP.
http://www.shaunakelly.com/word