In linguistics, grammatical person is the grammatical distinction between deictic references to participant(s) in an event; typically, the distinction is between the speaker (first person), the addressee (second person), and others (third person). A language's set of pronouns is typically defined by grammatical person. First person includes the speaker (English: I, we), second person is the person or people spoken to (English: thou or you ), and third person includes all that are not listed above (English: he, she, it, they). It also frequently affects verbs and sometimes nouns or possessive relationships. Grammatical number In Indo-European languages, first-, second-, and third-person pronouns are typically also marked for singular and plural forms, and sometimes dual form as well (grammatical number). Clusivity Some other languages use different classifying systems, especially in the plural pronouns. One frequently found difference not present in most Indo-European languages is a contrast between inclusive and exclusive "we": a distinction of first-person plural pronouns between including or excluding the addressee. Honorifics (linguistics) Many languages express person with different morphemes in order to distinguish degrees of formality and informality. A simple honorific system common among European languages is the T–V distinction. Some other languages have much more elaborate systems of formality that go well beyond the T–V distinction, and use many different pronouns and verb forms that express the speaker's relationship with the people they are addressing. Many Malayo-Polynesian languages, such as Javanese and Balinese, are well known for their complex systems of honorifics; Japanese, Korean, and Chinese also have similar systems to a lesser extent. Grammatical conjugation In many languages, the verb takes a form dependent on the person of the subject and whether it is singular or plural.