Tajik or Tajiki is a local dialect of persain language speaking in Tajikistan. the term Tajick introduce by Soviet in 20 century. historical name of tajik is farsi or zebani farsi ( farsi language or persain language )
It's means "it is" Its' means "belonging to it". Example:We went to see a Chicago landmark. It's downtown and quite popular. Over a million visitors a year attest to its' popularity.