Barack Hussein Obama is a former President of the United States, serving from 2009 to 2017. There are several synonyms for his name, including simply "Obama," "President Obama," and "Barack Obama." Other common terms used to describe him include "BHO," "Barry," and "the 44th President." Obama is also sometimes referred to by his initials, "BHO," or by nicknames such as "No Drama Obama." Regardless of what he is called, Obama's presidency was characterized by significant reforms in healthcare, foreign policy, and civil rights, and his legacy is one that will undoubtedly be studied and analyzed for many years to come.