Often the two terms are used to mean the same thing.

These countries use a word similar to billion to mean 10.

Used to mean because of: I am so happy for you.

The word lost is used to mean that you haven't seen the person in a long time.

When I think of what this used to mean to me!

In a few cases it is also used to mean wind or life.

The term may also be used to mean a young woman.

"Is it possible that they are using the two words to mean the same thing?"

Let's not water that one down by using it to mean something else.

It is also used to mean all the people on one level of a family tree.