ELI5: Explain Like I'm 5

Parse tree

A parse tree is like a special kind of map that helps us understand how a sentence is made up. Imagine we have a sentence like this: "The cat sat on the mat." To make sense of it, we need to figure out what each word means and how they are related to each other.

The parse tree helps us do this by showing us how each word fits into the sentence. We start with the main idea (in this case, "The cat sat on the mat"), and then we break it down into smaller pieces, like branches on a tree. The very top of the tree is called the "root," and it represents the main idea.

From there, we can follow the branches down to see how each word connects to the others. For example, we might have a branch that shows how "cat" is connected to "The" (because "The" tells us which cat we are talking about). We might also have a branch that shows how "sat" connects to "cat" (because the cat is the one doing the sitting), and another branch that shows how "on" connects to "mat" (because that's where the cat is sitting).

By breaking down the sentence in this way, we can better understand how it works and what it means. And we can use parse trees for lots of different sentences, not just this one!