Help comes in many different forms. To bolster something is "to add to, support, or uphold" that thing. The verb comes from the noun bolster, a cushion or pillow. The idea of cushioning, propping up, or giving a boost is central to the verb. However, while this noun bolster is most likely to prop up a person, the verb bolster is more commonly found in discussion of concepts and ideas. For example, you might bolster a case or an argument, or bolster a friend's confidence. Similarly, internet companies will seek to bolster their traffic, and government agencies strive to bolster the economy.