Buzz vs. Impluse Tracker Terminology Differences
The following chart should help explain the various differences in terms between Buzz and Impulse Tracker:

Terminology Differences
Buzz | Impulse Tracker
Tick | Pattern row
BPM | Tempo
TPB | Speed*
Sequence Editor | Order List

* This doesn't work as Speed in Impulse Tracker. Instead, higher value actually increase the song speed. Understand it as "Tracker rows per beat".