What's the Difference Between Polyurethane, Polycrylic, Varnish, Shellac and Lacquer?

Rust-Oleum 302151 Universal All Surface Clear Topcoat Spray, 11 oz, Dead Flat Clear

Can i use this stuff as clear coat? I know rustoleum has another clear coat that specifically says seal and protect but im curious if this one does the same job

Sherwin-Williams Finish 1 2.1 VOC Satin Clear Coat

Flex Paint Base (Clear) – brickintheyard

Clear Polyurethane Coating

The Best Spray Paint Clearcoats for Scale Models

Bosny Spray Paint 190 Clear Gloss Lacquer

Finish 1 2K Urethane Automotive Clear Coat: 32 oz. Quart Clear Coat + 8 oz. Activator, Paint, Body & Trim - Canada

Krylon Clear Gloss Colormaster™ Interior/Exterior Aerosol

Rust-Oleum Painter's Touch 2X 12 oz. Gloss Clear General Purpose