kiss, buss, osculation -- (the act of caressing with the lips (or an instance thereof))
Overview of verb buss
The verb buss has 1 sense
snog, kiss, buss, osculate -- (touch with the lips or press the lips (against someone's mouth or other body part) as an expression of love, greeting, etc.; "The newly married couple kissed"; "She kissed her grandfather on the forehead when she entered the room")
Overview of verb bus
The verb bus has 3 senses
bus -- (send or move around by bus; "The children were bussed to school")
bus -- (ride in a bus)
bus -- (remove used dishes from the table in restaurants)