A board edge is the narrowest side of any board

Edge grain is the grain pattern of the wood as seen from the side of the board

Edge sealing is a masking process where a sealer is applied over the tape edge to help prevent paint bleed

Elasticity is the ability of a material to stretch while still staying adhered to a surface

An elbow is an angular fitting used to change the direction of a pipe.

An electric drill is anelectric powered handheld tool for boring holes and driving fasteners with more torque than a cordless drill

An elevation view is a view of a building seen from one side, a flat representation of only one face. This is the most common view used to describe the external appearance of a building.

Emory clothis an abrasive sandpaper roll used for sanding and prepping copper pipe ends. 

An end cap is a fitting used to seal the end of a pipe or tube 

The end grain of a board is the grain pattern of the wood as seen from either cross-cut end