The difference between point of view and choice of person in a story is that

“person” is the literary name given to main characters in a story, and “point of view” is the perspective from which we view the story

“person” is part of a term used to describe the type of narrator (as in first-person or third-person); “point of view” is how the antagonist understands the events of a story
the terms are interchangeable;

there is really no difference between them

“point of view” refers to the perspective from which the story is told; “person” is part of a term used to describe a type of narrator (as in first-person or third-person)