Milium is a term used to describe a small, white cyst that can appear on the skin. Although there are no direct synonyms for this term, it can be replaced by other similar words. For example, the words "whitehead" or "milia" can be used to describe similar skin conditions. Other terms that may be used include "sebaceous cysts" or "papules." These terms are often used interchangeably, although they may have slightly different meanings. Regardless of the term used, milia can be a bothersome skin condition and should be treated by a dermatologist to ensure proper diagnosis and treatment.