cohere

When you finish writing a paper, you may feel that it coheres well, since it's sharply focused and all the ideas seem to support each other. When all the soldiers in an army platoon feel like buddies, the platoon has become a cohesive unit. In science class you may learn the difference between cohesion (the tendency of a chemical's molecules to stick together) and adhesion (the tendency of the molecules of two different substances to stick together). Water molecules tend to cohere, so water falls from the sky in drops, not as separate molecules. But water molecules also adhere to molecules of other substances, so raindrops will often cling to the underside of a clothesline for a while before gravity pulls them down.