A more thorough explanation:

Definition: A temporary stay in a place by someone who is not just passing through but is also not a permanent resident.

Example: She set up a three-month sojourn in France.

This means that the person stayed in France for three months, but they were not a permanent resident of France. They were just visiting for a short period of time.

Definition: A residential lot; a small, privately owned tract of land.

Example: The land grant included several solares for private ownership.

This means that the land grant included several small plots of land that were privately owned by individuals. This term is often found in old land grants in states that were formerly Spanish provinces or governed by Mexico.