"United with" is a common phrase that's often used to describe a joining of two or more things, people, or concepts. However, there are many other words that can be used interchangeably with this phrase to convey a similar meaning. Some of these synonyms include phrases like "connected with," "linked with," "bonded with," "attached to," "combined with," "associated with," "related to," and "merged with." Depending on the context, any of these words could be used to convey a sense of unity or cohesion between two or more entities, whether it's people working together on a project or concepts that are being compared and contrasted.