The phrase "passes into" can be used to describe various ways in which something moves or transitions from one state to another. Some synonyms for "passes into" include "transforms into," "develops into," "evolves into," "shifts into," "transitions into," and "becomes." For example, a caterpillar passes into a butterfly, a seed passes into a plant, and a child passes into an adult. The phrase can also be used to describe the passage of time or movement between locations. Synonyms in these cases include "enters," "goes into," "moves into," and "progresses into." Overall, the many synonyms for "passes into" offer options for describing a variety of transitions and movements.