Their
The word their is a determiner
It means –
-Belonging to
-Belonging to the people previously mentioned
-Belonging to the things previously mentioned
-Associated with
-Associated with the people previously mentioned
Associated with the things previously -mentioned
-Belonging to a person with an unspecified sex
-Associated to a person with an unspecified sex
-Belonging to a person whose gender does not correspond to the traditional binary of male or female
-Associated to a person whose gender does not correspond to the traditional binary of male or female
And is
-used in titles