Rebeccawalmsley

What does a die clash mean? Would this make the coin rare?

I recently bought a new 2017 Tom Kitten 50p however upon inspection it appears to be a mint error. It appears that on the front with Tom Kitten the queen is appearing through from the back (her nose appears on the left of toms face and her crown above toms head) and on the back with the queen you can see toms ears above her head. I have heard it could be ghosting or clashed die? Could anybody give me any advice on this? Apologies for pictures was hard to show up in natural light. The coin itself is brilliant uncirculated encapsulated as shown in the pictures