source:QUORA answered by NEHA SHAAH
#Hole:
is a circular cutout
can be a through hole or extend only upto a blind depth
we can also have a stepped hole
this figure might help you to visualize
#Slot:
-a slot is an elongated hole.
-it is stretched in one direction and usually has full radii on both ends
(the edges may or may not be round)
-usually a slot is cut into a flat plate
this a how a slot looks
#Groove :
-usually cut along the edge
-elongated cutout , usually cylindrical
-often used in welding
here are a few types of grooves used for welding
#Hole:
is a circular cutout
can be a through hole or extend only upto a blind depth
we can also have a stepped hole
this figure might help you to visualize
#Slot:
-a slot is an elongated hole.
-it is stretched in one direction and usually has full radii on both ends
(the edges may or may not be round)
-usually a slot is cut into a flat plate
this a how a slot looks
#Groove :
-usually cut along the edge
-elongated cutout , usually cylindrical
-often used in welding
here are a few types of grooves used for welding
