Adhesion and Add-on

Adhesion noun - A physical sticking to as if by glue.

Add-on and adhesion are semantically related. In some cases you can use "Add-on" instead a noun "Adhesion".

Nearby Words: adhere, adherence, adhesive, adhesiveness, adhesively

Add-on noun - Something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment.

Adhesion and add-on are semantically related. Sometimes you can use "Adhesion" instead a noun phrase "Add-on".