What kind of noncovalent interaction is typified by interactions between two molecules that are so close together that they can experience weak attractive forces bonding them together?

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This scenario describes van der Waals forces, which are weak, noncovalent interactions between molecules that result from fluctuations in electron density. These forces are only significant when the two molecules are very close together, and the attractive forces that result are responsible for weak van der Waals bonds. Hydrogen bonds, ionic bonds, and polar covalent bonds are generally stronger than van der Waals forces and involve more permanent asymmetry in charge distribution. Hydrophobic interactions involve the exclusion of nonpolar molecules from aqueous environments and do not rely on the attraction of two separate molecules.

What Kind of Noncovalent Interaction Is Typified by Interactions Between