The word 报告 is formed by combining two characters that each contribute related meanings to create a new, reinforced concept. The first character, 报 (bào), carries the core idea of reporting, replying, or announcing. The second character, 告 (gào), means to tell, inform, or notify. When joined, they create a compound where both elements operate in the same semantic field of conveying information, resulting in a meaning that emphasizes the formal act of presenting information, a report or briefing, through the synergy of their similar individual senses.