In act ii, scene 2, what does juliet mean when she says, "what's in a name? that which we call a rose by any other name would smell as sweet"?

"What's in a name? That which we call a rose by any other name would smell as sweet." It means that it does not matter to Juliet that Romeo is from the rival family, the Montague. It became a popular reference for the name things that does not get affected their true nature and characteristics.