Adhesion

Summary
Examples include...
 * The ability to attach objects (as well as other materials) together; methods including the use of sticky substances/adhesives, electromagnetism, or more advanced methods such as physically merging the molecules and/or atoms within those objects so that these objects are literally "fused" to each other.
 * This also includes the ability to attach itself to walls and other surfaces without the risk of sliding down/falling off from said surface via the pull of gravity, as said ability allows users to create strong attractive forces between themselves and the location that they are "attached" to.
 * The ability to imbue objects with the ability to stick to other surfaces, as well as objects, can also be categorized as showcasing this type of ability.
 * Spider-Man's ability to climb walls and buildings via sticking to said surface despite the pull of gravity
 * Sonic's Power Sneakers where said sneakers are equipped with magnetic soles that allow him to stick to metallic surface
 * Minoru Mineta (Boku no Hero Academia)'s balls on his head which can stick to things

Possible Uses

 * Adhesion Inducement: Users of this ability are able to add adhesive properties to objects/materials so that these objects/materials can stick to whatever it comes in contact with.
 * Adhesion Secretion: Users of this ability are able to create adhesive substances from different parts of their body. Exact strength & abilities of said adhesive depends on the user, as well as capabilities of said ability displayed throughout its appearances.
 * Wallcrawling: Users of this ability are able to climb walls, as well as attach themselves unto ceilings without sliding back down/falling off. While this ability does not provide said user to ignore the effects of gravity as a whole, it still allows users to remain attached to a wall (or a ceiling) that they are on for an extended period of time.