What is the difference between scientific explanation and regular explanation?

Answer 1

Scientific explanations are tentative proposals that are subject to evaluation, modification, or even overturn in light of further evidence.

An explanation is a statement or account that makes something clear, or a reason or justification given for an action or belief.

The basic difference is that a scientific explanation is a proposal that is subject to evaluation, modification, or overturn, and an explanation simply makes something clear or gives a reason or justification.

Answer 2

In theory, a scientific explanation is an explanation which can be tested experimentally, and proved, or disproved, by such a test. But in reality, many "scientific explanations" are not really testable but are at best consistent with all known observations. However, the same can be said for a lot of explanations which have no claim to being scientific.