This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
You are correct. Coupling measures inter-class dependency. Cohesion measures how focused a class is. In other words, a class should do only a few very related things, as opposed to combining functionality that should be split in different classes to promote modularity and code reuse.
All code in my posts, unless a source is explicitly mentioned, is my own.