Technical terms for user-website interaction

I am making a context diagram of a website and I noticed that the words I used for a user and the website's interaction are not consistent or cohesive.

I have been using the pairs of words below to indicate that a user requests to "see" a webpage:

a user "visits" a website and the webpage "views" (as a response to the user)

I can't find a more acceptable alternative for these two but I am sure there are better ones out there that I just don't know.

One more, what should I use if the page that a user wants to see is a popup or specifically a modal element (which means a user is not directed away from their current page)?

Solution 1:

A user views and inputs. A website displays and outputs. A modal pop-up is called a modal window.

Solution 2:

"Request" and "response" are the nouns typically used in HTTP specifications and libraries. "Request" and "respond" are the corresponding verbs.