Question of the Day #14

The art of representing three-dimensional objects on a two-dimensional surface so as to give the right impression of their height, width, depth, and position in relation to each other is word X.

Wordplay on X is Y.

Y has come into picture recently due to cat lovers posting this as a hashtag to understand every cat's #purrpose.

Looking at things from the POV of cats is basically Y.

Websites called Y have become popular amongst cat art lovers and the word Y is also the name of a short video on some websites which goes like : "Bruno-Life from his Y"

Which POV is X? Y?