When it comes to describing the creation of physical or conceptual entities, there are numerous synonyms that can be used interchangeably with the phrase "forms on." One might say that something is taking shape, materializing, or coming into being. Alternatively, they could use words like crystallizing, evolving, or manifesting. Depending on the specific context, other options might include emerging, coalescing, or even blossoming. Each of these alternatives offers a slightly different shade of meaning, allowing writers and speakers to tailor their language to better convey the nuances of the situation or topic at hand.