* Her courage in the face of danger was inspiring. (Here, courage is the subject of the sentence and describes a quality of the person.)
* He faced his fears with great courage. (Here, courage is the object of the preposition "with" and describes the manner in which he acted.)
* The soldiers displayed incredible courage on the battlefield. (Here, courage is the object of the verb "displayed" and describes an attribute of the soldiers.)
Let me know if you'd like more examples!