How does a fughetta differ from a longer fugue?

A fughetta is defined as a short fugue that consists of an exposition followed by only a few restatements of the subject.1

In contrast, a standard or longer fugue is a more extensive compositional procedure characterized by the systematic imitation of a principal theme across simultaneously sounding melodic lines, known as counterpoint. While a fughetta is limited in its development, a full-scale fugue often incorporates complex techniques such as stretto, augmentation, diminution, and melodic inversion to build toward a climax or explore the subject in greater depth.21