"Att pussa" is more like a peck- a softer kiss. "Att kyssa", on the other hand, is a serious, passionate kiss .
What is the correct pronunciation of kysser? I've heard it pronounced different ways.
How can you tell if the K is going to be a K sound, or the Sh sound (like kockarna vs kött)?
I'm pretty new to Swedish myself, but I believe the rule goes something like this: When k is followed by a hard vowel (a,o,u), it is pronounced like /k/, whereas with a soft vowel (e, i, y, ä, ö), it is pronounced like /š/.