reinforcement
This term carries a heavy sense of stability and augmentation. It is not just about adding more of something, but about adding specifically to prevent collapse or failure. In engineering, it evokes the image of a skeleton providing strength to a softer exterior.
In behavioral psychology, the word shifts from physical strength to mental motivation. It describes the mechanism of locking in a habit by associating it with a desirable outcome, creating a psychological bridge between an action and a reward.
Countable when referring to specific groups of soldiers arriving at a battle. Uncountable when referring to the general process of making a building stronger or the psychological concept of behavioral reward.
Meanings
The action of strengthening a structure with additional material.
The bridge required steel reinforcement to handle the heavy traffic.
Examples
Praise is a reinforcement.
The structural reinforcement failed during the earthquake.