How does a slot weld differ from a plug weld?

Plug welds and slot welds are used join overlapping members, one of which has holes in it Weld metal is

This is 5 Plug and Slot Welds by Komatsu on Vimeo, the home for high quality videos and

slot o They definitely didn't convey it that well though The plug weld called out essentially starts as a fillet weld all around the hole on the top

slot machine usa Slot welds are stronger than plug welds but require more filler metal A small weld made on or between the surfaces of overlapping parts Multiple spot welds