The abbreviation resp. has been used a number of times in the following paragraph:

For each of these problems (resp., tools), we start by presenting the natural concern underlying it (resp., its intuitive objective), then define the problem (resp., tool), and finally demonstrate that the problem can be solved (resp., the tool can be constructed).

I am trying to understand what resp. means here (and many more times in the same book).

Trying to search using Google only confused me more, there are so many options.

Also please see this answer, which says that "resp." means "namely". Is this correct?