hey man,

I usually just google something if I don't know a term,

sometimes I use urban dictionary but that's mostly slang terms although there is alot of 'jargon' there also.

As for your question, a higher drive frequency will give you slightly more punch but it will also heat the motor quicker.

Brushed motors all use pulse width modulation but when they're at full throttle they're straight dc anyway.

Brushless motors well I failed that course so it seems like magic to me

Cheers

Ashley