What is the difference between Google analytics, Adwords, Remarketing and Tag manager tags?

Question

Google Analytics

What is the difference between Google analytics, Adwords, Remarketing and Tag manager tags? Why are there so many? Can they all be posted on the site at the same time? For what occasions is each needed? Is there a generic tag?
I searched on the Internet, mostly everything is in English :(

Answer 1

Google Tag Manager is something like a container that is installed once on the site and through which you can place all other counters and codes without adjusting the site directly. All operations after its initial installation are performed through the Google Tag Manager interface.
Google Analytics is an analytical system, the counter code of which is installed either directly on the site or through Google Tag Manager. Through Google Tag Manager, installation is easier, but fine-tuning can cause some difficulties.
Google Adwords has different codes for conversion tracking and remarketing settings. But all of them are not needed if Google Analytics is already installed on the site.
Thus, we can say that Google Tag Manager is a more universal tag through which you can configure all the others. But installing Google Analytics one way or another (through GTM or without it) is still needed.

Answer 2

The tag manager has an opinion that it is not safe, but at this stage it is not critical for you,
put everything