1st Law of Software Process: Process only allows us to do things we already know how to do.
2nd Law of Software Process: We can only define software processes at two levels: too vague and too confining.
Source: The Laws of Software Process:
http://www.corvusintl.com/CACM003-LoSWP.htm
A methodology is the conventions the team agrees to follow.
Methodology Success = Project delivered + Staff would do it again
Source:
http://alistair.cockburn.us/Everyone+should+be+a+methodologist
A software development process is a framework imposed on the development of a software product.
Source:
http://en.wikipedia.org/wiki/Software_development_process