Any difference between “top selling” and “best selling”

Question

I have seen on TV the expression about album sales and the presenter used an expression "top-selling" album, referring to one of the albums. Then I remembered there is also another word in English to mean the same thing, which is "best-selling". They both seem to mean the same thing?

Any difference between the two?

Regards,

Answer 1

Technically, best means nothing is better, whereas top can just mean something like in the upper 10% or beyond a certain threshold.

In reality both of these are marketing terms used for their sound and the exact meaning usually doesn't matter. For example, check out the Wikipedia article on bestseller.