Deixis refers to words whose meaning depends on context, such as pronouns and expressions of time, place, and social relationships. There are several types of deixis:
1) Person deixis includes pronouns that refer to the speaker (I/me), addressee (you), and others (he/she).
2) Spatial or place deixis refers to location using words like here, there, this, and that.
3) Temporal or time deixis uses expressions like now, then, tomorrow to indicate when events occur.
4) Social deixis conveys social relationships through honorifics and relative social status. Deixis allows language to link words