Does your child often walk into things, bump into people or objects in the street or knock over drinks by accident? This relates to issues with spatial awareness.
They may have either a poor concept of their position in space, or the limits of personal space.
Their tendency may be to approach people too close for comfort. This can feel intimidating to the other person, affecting friendships with their peers.
Alternatively, they may be the child in the playground who stands away from the action, in apparent intended isolation. Only one of these features may be obvious, because they are part of a combination of the underlying issues. These relate to persisting primitive infant reflexes. They are usually part of a bigger picture.