What is the difference between web analytics and behavioral analytics?

Web analytics just measures the website, whereas behavioral analytics looks at the full digital marketing picture.

Web analytics tells you what happens, whereas behavioral analytics tells you why it happens and what you can do to fix it$.$

There is not really any difference, the terms are used interchangeably.

Web analytics gives you the basic website metrics KPIs for a given week, whereas behavioral analytics gives you more data over time.