The word 'yuppie' is a noun, a word for a person.

Back in the 1980s, the term 'yuppie' was used to describe a 'young urban professional'; people in their twenties and thirties who were recent college graduates and starting their careers with high expectations. The term 'yuppie' was sometimes used with amusement because these focused, well groomed, well dressed, young people were the children of the 'hippies' of the 1960s.

A noun functions as the subject of a sentence or a clause, and as the object of a verb or a preposition.

Example sentences:

A yuppie will seek opportunities. (subject of the sentence)

A prosperous future is the goal of a yuppie. (object of the preposition)