Comprehension, language, and application

What does «فَلَا يُؤْذِ جَارَهُ» mean?

Rights of Guests and Neighbors, Worship, Sincerity, and Responsible Care (Hadith 246–252)

• A neighbor’s property may be taken
• He should not cause his neighbor harm
• Speaking to a neighbor is always forbidden
• Only avoid harming close relatives