Alignment provides one of the simplest and most direct means for conveying direction and creating unity in a composition. Edge-to-edge contact and overlapping creates a continuous mass of shape. On the other hand, alignment implies a direct link from one independent object to another independent object. For example, the text on this page runs in a tight sequence of letters and words on an imaginary horizontal path. This text also happens to be aligned on the left edge (“flush left”).
The wine label’s red components (clock hand and the name of the grape) align on a centered axis.
Alignments require a certain degree of tension or closeness from one object to the next and an imaginary path, otherwise the connections tend to weaken.