There are various synonyms for the phrase "is part of" that can be used to indicate something being a component or constituent of a larger entity. A few such alternatives include "belongs to," "is a component of," "forms a portion of," "is a section of," "comprises part of," and "contributes to." When writing, it can be useful to vary the phrasing used to avoid repetition and maintain reader engagement, particularly if discussing a complex topic with several interrelated elements. Utilizing synonyms for "is part of" can help keep writing fresh and engaging and ensure that the reader stays attuned to the content being presented.