adhesion; adhesive force
Technical term used in physics, engineering, and materials science to describe the force that causes two surfaces to stick together.
This adhesive has high adhesion.
Surface roughness affects adhesive force.
粘着力 refers specifically to the sticking power of a viscous substance, like glue or tape, whereas 附着力 is a broader physical term.
Compound of 附着 (fuchaku, 'adhesion') + 力 (ryoku, 'force'). The kanji 附 is a variant of 付 (attach), and 着 means 'stick' or 'adhere'.