At one time in my life, I thought I had a handle on the meaning of the word "service."
The act of doing things for other people.

Then I heard the terms Internal Revenue Service, Postal Service, Civil Service, Service Stations...

And I became confused about the word "service."

This is not what I thought "service" meant.

Then one day, I overheard two farmers talking and one of them mentioned that he was having a bull service a few of his cows.

SHAZAM!!

It all came into perspective.