What are the key differences between block and inline elements?

Question

HTML

I read the documentation and for some reason their differences are somehow described in a slippery way everywhere. The inline
element differs from the block element only in that the block element has a default width of 100%, and the inline element cannot occupy 100% of the parent block until we transfer it to inline block?
And you can put any other block or inline elements in a block element, but only inline elements in an inline element?
That's all?

Answer 1

first block second row.
A wagon and a small cart are different.
In general, the difference is that the block allows you to more flexibly control positioning.
However, I recommend using the semantic model.
That is, ideally, html should not contain any class tags or style tags.