The word 'them' is not a noun. The word 'them' is a pronoun.
A pronoun is a word that takes the place of a noun in a sentence.
The pronoun 'them' is a personal pronoun, a word that takes the place of a noun (or nouns) for specific people or things.
The personal pronoun 'them' is a plural pronoun that takes the place of a plural noun or two or more nouns.
The personal pronoun 'them' is a third person pronoun that takes the place of people or things spoken about.
The personal pronoun 'them' is an objective pronoun that functions as the object of a verb or a preposition.
Examples:
My parents are coming to visit. It will be good to see them.
Jack and Jill will be home soon. I made some lunch for them.
The mountains look so beautiful, I took a photo of them.
Note: The corresponding third person, plural, personal pronoun that functions as a subject in a sentence is 'they'.
Example: My parents are coming to visit. They will stay for the weekend.
The noun 'kind' is an abstract noun. There is no form for kind that is a concrete noun.
The noun 'kind' is an abstact noun as a word for a type or class. The abstract noun form of the adjective "kind" is "kindness".
The word 'kind' is both an adjective and a noun. The noun kind, a singular, common, abstract noun is a word for a group of individuals or instances sharing common traits; a category.The noun forms for the adjective kind are kindness and kindliness.
It's no kind of noun it is an adjective. The noun is ravenousness.
The the noun 'kind' is an abstract noun as a word for type or class; having similar characteristics.The abstract noun for kind is kindness.
A common noun
The noun "street" is a common noun.
The noun "sugar" is a common noun.
It isn’t a noun at all. Replaces a noun.
A common noun.
It is an abstract noun.
Proper noun