Mrozek is a surname which comes from Czech-Slovakia. It means 'One with the qualities of a Walrus'.
Person 1 : "What's your surname?"
Person 2 : "It's Mrozek"
Puzynowska is the female version of a Polish surname. Given to all the amazing gals. If your surname is Puzynowska, then you sure are one beautiful, funny and out-of-this-world girl.
Person 1 : What's that girl's surname?
Person 2 : Her? Oh Puzynowska