The term homeworld, also spelled home world and sometimes referred to as home planet, had at least two related meanings.
An individual's homeworld meant their planetary body of origin. Generally speaking, a being's homeworld was their place of birth, but it could also mean a world that person moved and 'adopted' as a place they most identified with. Such was the case with Princes Leia Organa of Alderaan and Luke Skywalker of Tatooine. They were twins born in a medical facility in the Polis Massa asteroid field, but subsequently raised on other planets which became their homeworlds.
In another sense, the homeworld of a species, culture, or organization referred to their planet of evolution, development, or origin. Kashyyyk was the planet of origin of the Wookiee species, and was thus the Wookiee homeworld. Moraband was considered the homeworld of the Sith Order. Lasan was the adopted homeworld of the Lasat species, and very few in the galaxy knew that that species' original homeworld was Lira San.
The term homeworld could also refer to the planet of origin of an organization or species. As such, Moraband was considered the ancient homeworld of the Sith Order, while Kashyyyk was the homeworld of the Wookiee species. The Galactic Empire attempted to train loyalty to homeworlds out of cadets training at their Imperial Academies, as it felt that such loyalties detracted from one's service to the greater Empire. An individual might consider a particular planet their "adopted homeworld" if they had lived on it for a long time and come to appreciate it, even if not born there. Zare Leonis came to think of Lothal as his adopted homeworld despite having been born on Uquine and not having moved to Lothal until he was fourteen years of age.
Although the term itself was "homeworld," it could in some cases refer to a habitable moon or a region of space. Pantora, the primary moon of Orto Plutonia, was the homeworld of the Pantoran species.