You can synchronize a google address book with Thunderbird. But it does not replace the built in one, it is supplemental to it.

Use the down arrow beside the "new address book" button to add a carddav address book. Enter your gmail email address when prompted for the username (most usernames at google are the email address) leave the location blank and you will be prompted to log into google if that is necessary and then offered address books if there is more than one.

Thanks for the pictorial answer. It didn't work for me I select "add CardDAV address book, then enter [email protected] - and location auto enters "gmail.com"

Then it pops up a windowlet at https://accounts.google.com/_/bscframe -

With login details. On Next it says

400. That’s an error.

The server cannot process the request because it is malformed. It should not be retried. That’s all we know. ~~~~~ I am logged in, so when I go to "gmail.com" it brings up standard gmail dashboard. Any insights appreciated

Elsewhere for gmail CardDAV access it says it needs https://developers.google.com/identity/protocols/oauth2 and my old account perhaps has legacy