Number is marked on noun phrases and pronouns. Taba distinguishes grammatically between singular and plural categories, as shown in (3) to (9) above. Plural marking is obligatory for humans and is used for all noun phrases which refer to multiple individuals. Plurality is also used to indicate respect in the second and third Person when addressing or speaking of an individual who is older than the speaker. The rules for marking Number on noun phrases are summarised in the table below: