The possessive form of "settlers" is "settlers'" as in "The settlers' cabins were built on the edge of the forest."
The possessive form of the compound noun passenger liner is passenger liner's.Example: The passenger liner's cabins are very luxurious.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive noun for laboratory is laboratory's.
The possessive noun of "preacher" is "preacher's."
The possessive noun of "zoo" is "zoo's."
"He" can function as a possessive pronoun (e.g., "This is his book"), but it is not a possessive noun on its own.
The possessive noun form of "oxygen" is "oxygen's."
The possessive form for the noun coyote is coyote's.
The possessive form is grandson's.
The possessive form is island's.