need help with boxing terminology

[V-spb]

Tell Him to get a copy, while in Russia He should learn to speak Russian.

Can't disagree but... he's leaving in a few years and since he doesn't need Russian for his work it'll be a waste of time. That's why I'm here asking all these questions.

Would be grateful if you could also answer this one:

what do you say in English - punch lighter/harder or stronger/softer

[Scrap]

Tell Him to get a copy, while in Russia He should learn to speak Russian.

Can't disagree but... he's leaving in a few years and since he doesn't need Russian for his work it'll be a waste of time. That's why I'm here asking all these questions.

Would be grateful if you could also answer this one:

what do you say in English - punch lighter/harder or stronger/softer

I say Light or Heavy, also use the Term Fairy's or Giants.

[V-spb]

He was talking about a technique of throwing a jab like Kostya Tszue

Exactly, though we lean forward far less.
Actually, I was taught to do jabs both ways - with leaning forward and being in a balanced stance (as greynotsoold wrote) but in sparrings we always opt for jabs like Kostya Tszue showed.
That's because my trainer told us that we should keep our upper body moving back and forward all the time. It was drummed into us and our sparring strategy was built on it.

Thanks for the tips, if i have more questions I'll come back again