Marek wrote:
brać/wziąć = perf./impf. 'to take'
potrafić/móc = perf./impf. 'to be able to, can
pójść/chodzić = perf./impf. 'to go'/'come'
umrzeć/zamierzeć = perf./impf. 'to die'
potrafić / móc are simply 2 different verbs (with sometimes similar meaning), both imperfective.
pójść / chodzić, actually the perf./impf. pair is pójść / iść.
chodzić = "to walk" or "to go" (but in the meaning of "to frequent" - chodzić do szkoły, do pracy etc.)
umrzeć/ umierać = perf./impf. 'to die'
(no such word as zamierzeć, only zamierz
ać = to intend)