The difference between PS aux and PS EF

PS aux is displayed in BSD mode
Ps-ef is shown in System V mode, which is more important than BSD mode ... (specifically which one forgot the-_-)

PS aux output:

USER PID%cpu%MEM VSZ RSS TTY STAT START time COMMAND

Output of the PS-EF:

UID PID PPID C stime TTY time CMD

UID User ID
PID Process ID
PPID Parent Process ID
C CPU Usage
Stime Start time
TTY starts TTY for this process
The total time that this process ran
CMD command name

The difference between PS aux and PS EF