nic=nothing/anything (in negative). But we have another rules and i`m not sure that i can explain/remember it. We often use 2 negates words in sentence. identically is with nobody/anybody(+not) or nowhere/anywhere(+not) examples? Famous sentence from GOT
You know NOthing Jon Snow=You doN`T know anything John snow = NIC NIE wiesz John Snow.
co robisz? We can translate on a few difference ways What are you doing? What do you do (free time/work/hobby ....)?
we aren`t going for it? sth like that but my not to good English limit me.
czujesz A lot of meanings. Feel, sense,taste, smell . ... I need context to tell you more