You got it, the noun salesman would be one and plural is salesmen.
Salesperson is a noun, not a verb.
The noun phrase 'outstanding salesperson' is made up of the common noun 'salesperson' described by the adjective 'outstanding'.The noun 'salesperson' is a common noun as a general word for anyone who is employed in sales; a word for any salesperson of any kind.A proper noun is the name or title of a specific person, place or thing.Examples:We need an outstanding salesperson who can meet or exceed our goals. (common noun)The winner of our Outstanding Salesperson Award this year is Margaret Sellers. (proper noun, the name of a specific award)
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.