So, imagine you're playing with some building blocks. You can stack them up to make a big tower, or put them together to make a car.
In the same way, HTML is a special type of "building block" that lets you make things on the internet. You can use different blocks to create different things, like text, pictures, and buttons.
These building blocks are called "HTML components" and they come in lots of different types. Some are for making headings (like the big title at the top of a page), some are for making paragraphs (like the long parts in the middle of the page), and some are for making pictures (like the ones you see everywhere online).
When you put these HTML components together in the right way, you can build a whole website that people can visit and look at on their computer or phone.
So, in short, HTML components are like building blocks that you can use to make things on the internet like websites.