I report it as a bug, because of the lack of consistency that it brings.
Someone already reported it but I can't manage to find the issue back.
Content -> Noun
Structure -> Noun
Appearance -> Noun
People -> Noun
Extend -> Verb
Configuration -> Noun
Reports -> Noun
It makes the process of reading the administration links non straightforward. The original issue describes this better than me. I think we should rename it to "Extensions".
In the mean time, why not consider renaming the modules/ folder to extensions/ ?