No, "him" is not a possessive pronoun. It is an objective pronoun used as the object of a verb or preposition. Possessive pronouns include "his" as a possessive form of "he."
"He" can function as a possessive pronoun (e.g., "This is his book"), but it is not a possessive noun on its own.
The singular possessive is biker's; the plural possessive is bikers'.
NO, an aeroplane is not an automobile.
automobile
Women's is a plural possessive. The singular possessive is woman's
The singular possessive of "ant" is "ant's" and the plural possessive is "ants'".
The singular possessive form is headdress's. The plural possessive form is headdresses'.
The possessive form of "he" is "his": He did his homework after dinner.
The singular possessive is Richard's; the plural possessive is Richards'.
The singular possessive is "ox's". Another contributor wrote "oxen's", but that is the plural possessive.
the automobile is used for transportation