Fashion concept sketching doesn't always involve designing wearable clothing, but can also include virtual character development or prosthetic devices.
Interior design should not be considered "architecture". It is more basic and focuses on capturing the appearance and atmosphere of a structure or place.
Industrial sketching captures the form of a manufactured object with specific focus on material choice, labeling, and functional notes. It is the most technical of the skethcing areas.
Use Flow sketches follow the input process of a service based design, map the engineering design cycle, or show the steps in a physical process. The image below is just one example of a rough layout that can be refined into something more specific like the example below.