When it comes to discussing a particular topic, it is common to use the phrase "are concerned with." However, using the same phrase repeatedly can make your writing or speaking sound repetitive and monotonous. To avoid this, you can use synonyms for "are concerned with" to express the same idea in different words. Some synonyms that can be used interchangeably with "are concerned with" include: deal with, focus on, revolve around, center on, concentrate on, pertain to, and relate to. By using these synonyms, you can add variety to your language and avoid sounding repetitive in your communication.