Can you explain why you want to know?
I wouldn't say so. Clinch fighting involves fighting out of the clinch. A tackle is a ballistic attack done (usually) from some separation. You're not in the clinch (standing and in contact with them) long enough for it to be a "fight" there.
NOPE, If falls under little children in diapers, horsing around.
Your questions get dumber by the day.
No.
Does tackling someone fall under the category of clinch-fighting??