Difference Between a Lecture and Sermon

In general, I like the distinction Sean Lucas makes here:

When I'm doing a lecture--say for a Wednesday night Bible study--I feel a greater responsibility to account for the various details of the text. That's because a major goal in a lecture is information--in exposing the text, I'm trying to give people as much information as possible about the text so that they will understand it. While I would naturally do application as we go along, application is not the real focus of a lecture.
 

But when I'm preaching a sermon--especially for our Sunday morning services--I feel a profound responsibility to explain and apply the text in such a way as to stir people's affections and move them toward Christ. Whereas my major goal in lecturing is information, my major goal in preaching is transformation. And because this is the case, I don't feel the burden to give people as much information as possible; rather, I feel the burden to give people the information necessary about the text so that they will see the connections to their own lives and be moved to seek God in Christ as a result. Application is the major focus of the sermon.