Genealogy / Does your last name end in CKI not SKI [60]

Thread attached on merging:
Polish Names

Can someone tell me why so many Polish names end in ski? Does it mean something? As a recent visitor to Poland, some have asked me this question and I am not sure of the answer. Maybe someone can resolve this question. Thanks.

Genealogy / Does your last name end in CKI not SKI [60]

The information was very helpful and now I can answer the question, when asked. Thank you.