Final answer:
The capitalized word 'THOSE' in the question is a determiner, not a noun. Determiners specify and introduce nouns without naming them, while nouns name specific persons, places, or things. Proper nouns are always capitalized, but determiners are not.
Step-by-step explanation:
In the question "What are THOSE?" the capitalized word THOSE is a determiner. In the English language, a determiner is a word that introduces a noun and identifies it in detail by specifying which one, how many, or whose it is. For example, words like 'this,' 'that,' 'these,' 'those,' 'my,' and 'our' are all determiners. They help to clarify what exactly is being talked about, without necessarily naming the thing.
A noun, on the other hand, is a part of speech that identifies a person, place, thing, or idea. In the sentence "Mary jogged," 'Mary' is a proper noun because it names a specific individual. Whereas in "That tall woman jogged," 'woman' is the noun, and 'that' is the determiner used alongside the adjective 'tall' to form a noun phrase.
It's important to note that proper nouns, such as names of specific people, places, or organizations, are always capitalized, but this rule does not apply to determiners. Therefore, 'THOSE' in the example is capitalized for emphasis, not because it is a proper noun.