Duct tape and Duck Tape® are often used interchangeably, but they aren’t quite the same thing.
Duct Tape vs Gaffer Tape: Head-2-Head Challenge - GafferTape.com
Is 'duck tape' different than 'duct tape'? - Quora
Gaffer Tape vs. Duct Tape: What's the Difference? - Tape Jungle
3M TALC General Use Duct Tape 2929, Silver, 1.88 in x 50 yd, 5.5 mil, Individually Wrapped Conveniently Packaged: : Industrial & Scientific
GENERAL USE: Polyethylene film laminated to cloth with a rubber adxhesive resists tears curling and tears off the roll cleanly INSTANT BOND: Sticks
3M TALC General Use Duct Tape 2929, Silver, 1.88 in x 50 yd, 5.5 mil, Individually Wrapped Conveniently Packaged
3M 8979 Performance Plus Duct Tape, Slate Blue, 48 mm x 22.8 m x 12.1 mil – High Performance Tape for Splicing/Taping Insulation, Capping Pipe, Temporary Repair and More, 1 Pack: : Industrial & Scientific
duck (fabric) / duck tape / duct tape —
The [Complete] Technical Guide to Duct Tape
Gaffer Tape vs. Duct Tape: What's the Difference? - Tape Jungle
PC 619 Duck Pro® by Shurtape® General Purpose Grade, Specialty Grade, Fluorescent Cloth Duct Tape - Shurtape