Is all user input in a website app considered a form?

We have a complex web app with graphs and panes. Some of the information is entered in popups, while other information is in fields that can appear in cards, tables, and separate fields. Some of the information appears in a Properties pane when you display a graph. (Master/Details view).

When we discuss user input - are all types of input considered a "form"?

Thnx.