Indefinite pronouns are not like definite pronouns. Definite pronouns replace specific nouns or other pronouns, but indefinite pronouns don’t. Definite pronouns do not have definite meaning. Definite pronouns do not specifically replace nouns. There are two kinds of indefinite pronouns: singular indefinite pronouns and plural indefinite pronouns.
There are two categories of indefinite pronouns: indefinite pronouns which refer to nonspecific nouns and indefinite pronouns which point to specific nouns whose meaning can easily be understood because mentioned before or followed by words which can make the meaning of it clear. This category can function as adjective when nouns follow it.
These are the indefinite pronouns which refer to nonspecific nouns:
These are indefinite pronouns which point to specific nouns (Have been mentioned before of followed by words which can make it clear):
These are singular indefinite pronouns:
These are the plural indefinite pronouns:
These are the indefinite pronouns which are sometimes singular and sometimes plural: