As discussed earlier, there are four primary demonstrative pronouns. They are this, that, these, and those.
Out of these, this and that are singular demonstrative pronouns, and these and those are pluralistic demonstrative pronouns. There are three more demonstrative pronouns that are less widely used. They are such, none, and neither.
Out of these, such and none are used in both singular and pluralistic forms. Neither is used as singular alone.