The term "homeland" is certainly not a title exclusive to Eretz Yisrael. Every nation expresses its patriotism by referring to its land as its "moledet".

We do find, however, a Torah source for its application to the Jewish homeland. When the Patriarch Yaakov, in the home of his uncle Lavan in Padan Aram, was told by G-d to leave, the instructions were "to return to your homeland and I shall be with you." (Bereishet 31:3)