Yes. "Hand to hand combat" refers to any sort of very close range fighting, with or without hand held weapons, for the purpose of overpowering, restraining, injuring, incapacitating, or killing an opponent.
Absolutely, of course
yeah
Yes, this is known as Clinch fighting.
It's a takedown of sorts.... But not exactly part of any Martial Arts that I've heard of... So kind of, part of fighting hand to hand, yes. But fighting with a certain martial art... Probably not
Probably in certain instances.
Can tackling someone down to the ground be counted as hand-to-hand combat??