Number of comments and number of review comments

Hello there!

Context:
I would like to retrieve the number of comments (and review comments) in issues and pull requests, without querying for the whole comments and/or pull request review comments.

Problem:
I am stuck with the following doubt which does not seem to be perfectly documented.

The returned issue object from the REST-API, contains a field “comments” with integer value. Question 1) what does it corresponds to? is it the number of comments?

Similarly, the returned pull review object, contains a field “review_comments” with integer value. Question 2) what does it correspond to? is it the number of review comments?

I am puzzled by the documentation, it does not clearly state what those fields correspond to.
This is what is in the documentation:

| comments |The API location of this Pull Request’s Issue comments.|
| review_comments |The API location of this Pull Request’s Review comments.|

What does it mean?

Can anyone please shed some light here?