Difference between a pear and hourglass shape?

This seems silly to ask because it seems so obvious, but is there really that much difference between a pear shape and an hourglass?

Obviously the difference is a that an hourglass has more boobage but from a front view they seem to look the same.

I'm a C cup so assumed I had an hourglass figure but yesterday I was told I was a pear lol (well not literally!).
Difference between a pear and hourglass shape?
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