Isometric drawing vs one-point perspective

Both isometric drawings and one-point perspective drawings use geometry and mathematics to present 3D representations on 2D surfaces. 

                  One-point perspective drawings mimic what the human eye perceives, so objects appear smaller the further away they are from the viewer. 

                                    In contrast, isometric drawings use parallel projection, which means objects remain at the same size, no matter how far away they are.

Isometric drawings are more useful for functional drawings that are used to explain how something works,useful for designers – particularly architects, industrial and interior designers and engineers, as they are ideal for visualizing rooms, products, and infrastructure.

                   while one-point perspective drawings are typically used to give a more sensory idea of an object or space. 

Isometric drawings                        ::    functional drawings

one-point perspective drawings   : :   sensory idea 

isometric drawing 

2 Point Perspective