Demonstrative pronouns in Greek function to indicate the position (spatial or temporal) of a noun relative to the speaker. They play a significant role in everyday communication and are essential in the context of conversation and text. These include demonstratives to represent ‘this’ (singular) and ‘these’ (plural) in proximity, and ‘that’ (singular) and ‘those’ (plural) for objects farther away. They change their form according to gender (masculine, feminine, and neuter), number (singular and plural), and case (nominative, accusative, and genitive).