Cumulative CPU Time (Time column in the o/p of ps aux command)

Question

What is mean of cumulative CPU Time (Time column in the o/p of ps aux command )?
And the difference between 9th and 10th column of output of ps aux command?

Solution

if you do man ps then under the section "STANDARD FORMAT SPECIFIERS" each header is explained.

TIME accumulated cpu time, user + system...

i.e. the amount of cpu used so far by the process in minutes:seconds.

START time the command started...

i.e. the time of day (hours:minutes), or date, the command was started.