G'day The Count (hahaha!) and Mod BB

I have been following this one, but am largely ignorant of the terminology.

Is grooming a less invasive approach to scarifying?
I guess both de-thatch to different degrees?

Any explanation welcome.

Many thanks for the great images.
I feel this will help other members,

Cheers
-------------------------
Jack.

p.s. Mod BB, is this topic better suited to the Lawn Maintenance forum?