The phrase "arrange on a line" refers to the act of organizing objects or items in a straight formation. Although this phrase may seem straightforward, there are various synonyms that can be used to describe this action. These include "align," "marshal," "range," "order," "stack," "line up," "array," and "form a queue." Each of these words carries a slightly different nuance or connotation. For example, "align" may suggest the need for precision or conformity, while "queue" implies waiting in a specific order. By using alternative words to describe this action, writers and speakers can add variety and richness to their language.