They are different types of sound design.
The four elements of sound design are Ambiance, Foley Sounds, Audio Effects, Voice Over. The three main categories: walking, props and cloth.
Sound designers collect, edit and create sound effects.
An example of sound design:
Lightsaber: combination of a film projector’s motor hum, Tv interference and waving a mic in front of the speaker to create “swooshing” sabers.