The word "callers" is commonly used to refer to people who make phone calls or visit someone's house. If you want to use a different word to refer to them, there are several synonyms that you can use. For example, you can use the word "visitors" to describe people who come to your home, or "dialers" to describe individuals who make phone calls. Other synonyms for "callers" include "guests," "contacts," "call-ins," and "phone users." Using synonyms can help you diversify your vocabulary and express yourself more effectively.