The phrase "are part" can be replaced by various other synonyms depending on the context. For instance, "are a component of," "form a fraction of," or "contribute to" can substitute for "are part" when referring to a collective entity's components. Similarly, in the case of an action, "are engaged in," "participate in," or "play a role in" can replace "are part" when talking about one's involvement in an event or project. Finally, in some cases, "are integrated into," "are included in," or "compose" might be apt synonyms for "are part," when discussing one's position or involvement in a group or organization.