How to interpret a few virtual memory figures?

Hello,
I'm trying to correctly interpret the following figures of virtual memory, but still have many doubts.
Please, advise the statements below which are marked in red.
Note: The sample system has only one running NGZ z1.

GZ# prtconf | grep Mem
Memory size: 32768 Megabytes

GZ# zfs get volsize rpool/swap
NAME        PROPERTY  VALUE    SOURCE
rpool/swap  volsize   50G      local

GZ# zfs list -o used,refer rpool/swap
 USED  REFER
51.6G  31.2G
 
>> The system has 32 GB of physical RAM and a disk-based swap of 50 GB has been, of which 31.2 GB points data blocks.

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GZ# zonecfg -z z1 info capped-memory
capped-memory:
    physical: 24G