1K: is usually referred to a product that contains no "hardener" or chemical additive as a 2K product does.

2K: is usually referred to a product that requires a "hardener" or chemical additive to provide a more durable finish over 1K products.  Adding just a reducer does not make a product a 2K.

Anti-Stat Wipe:  This is a wipe that contains Isopropyl alcohol and denatured water mix which helps to eliminate static electricitiy.

Base Coat:  A type of color coat that requires a clear coat to be applied.  Base coat generally does not have UV or chemical protection without clear coat.

Clear Coat: A top coat applied which is clear over the color coat.  Generally applied over a Basecoat product.  Some Single stage products must be cured and sanded to enable the application of a clear coat.

Dormant:  Describes what a paint does when it goes below a certain temperature.  Usually 60 degrees.  At that temperature the paint will just lie there and not "cure" at all.  Most cases the paint will continue to cure once the temperature has risen above it's "dormant" temperature, but some paints will never cure if they go dormant.

Epoxy:  A term used to describe a family of paint products.  A epoxy is generally a slower drying product that is very durable and has good adhesion to most substrates.

Gel Coat:  A form of fiberglass resin that contains color.  This is the topcoat of most fiberglass products and is applied in the mold before the actual fiberglass resin/matting.

Ground Coat:  Describes a uniform color designed to enable better coverage or to help obtain the desired color.  This can be obtained by using a sanded primer in the desired color, a primer sealer in the desired color, or by painting the desired color and then top coating with the finish topcoat.

Overlap:  Describes the amount of paint that is currently being sprayed will overlap a previously sprayed pass.  IE a 75% overlap has 75% of the current coat "overlapping" the previous coat.

Sealer:  This describes a product that you spray on, let flash, and then continue to top coat without the need to sand.  This can also be called a "primer sealer".

Self Etch:  This is a family of products that are used to chemically etch bare steel.  This enables better adhesion and also gives a coating that will sacrifice itself if the coating is scratched and rust develops at the scratch.

Single Stage Topcoat:  This is a type of color coat that has built in UV and chemical resistance.  No clear coat is needed.

Tack Rag:  Generally a cheese cloth or paper product with some adhesive or tack built into it.  It is used to remove loose dirt prior to painting or between coats of paint.

Urethane:  A term used to describe a family of paint products.  A urethane generally does not adhere to bare steel as well as other products.  It dries faster and has better sanding capabilities as a primer surfacer, and holds it's color better when used as a topcoat.

Wax and Grease:  This is a product that is usually solvent based and designed for cleaning wax/grease/tar and other solvent based contaminations from the painted surface.  These are generally a specific product designed for this purpose.  Using a plain solvent can leave residue that may hurt the adhesion of your paint and cause paint defects.

White Blast:  This is a term used to describe the quality of a sand blast job.  A white blast will look almost white and have no rust left behind.