Definition: Fortification: It is a physical defense system constructed to resist assault by using natural or artificial fortresses, such as walls, towers, castles, and fortifications.
Definition:
A fortress is an adverbial modifier used to describe something. In English, "fortified" means that something has been fortified or reinforced with material or tools to prevent or diminish the threat of attack.
For example:
1. The army was surrounded by a strong fortification.
2. The fortification against an incoming storm.
3. The walls around the fortifications were fortified with stone and steel.
In other words, a fortress is a physical defense system that is built to protect someone from harm or danger.
fortification