Hacker Definition:

In order not to get confused or misleaded, please read carefully:

From The Jargon File, by Eric. S. Raymond:

hacker: /n./  [originally, someone who makes  furniture with an axe] 1. A person who enjoys exploring the details of  programmable systems and how to stretch their capabilities, as opposed  to most users, who prefer to learn only the minimum necessary. 2. One  who programs enthusiastically (even obsessively) or who enjoys  programming rather than just theorizing about programming. 3. A person  capable of appreciating hack value. 4. A person who is good at  programming quickly. 5. An expert at a particular program, or one who  frequently does work using it or on it; as in `a Unix hacker\\''.  (Definitions 1 through 5 are correlated, and people who fit them  congregate.) 6. An expert or enthusiast of any kind. One might be an  astronomy hacker, for example. 7. One who enjoys the intellectual  challenge of creatively overcoming or circumventing limitations. 8.  [deprecated] A malicious meddler who tries to discover sensitive  information by poking around. Hence `password hacker', `network hacker'.  The correct term for this sense is cracker

From PMBoK Guide:

Project: a project is a temporary endeavor undertaken to create a unique product, service or result. The temporary nature of projects indicates a definite beginning and end.

Project Management: Project Management is the application of knowledge, skills, tools and techniques to project activities to meet the project requirements.