The 4 questions nouns answer are:
1. Who? (person)
2. When? (idea or time)
3. Where? (place)
4. What? (thing)
There are three nouns. People, group, and questions are nouns. Questions is a plural noun.
Who and what
Where when how many how much whose
Example questions that are answered by nouns:What is your name?Where did you go to school?Would you like chocolate or strawberry?
There are 2. "Tom" is a proper noun (a name). The word "questions" is a plural common noun.
Interrogative pronouns are used to ask questions about nouns (e.g. who, whom, whose). Interrogative adjectives modify nouns in questions (e.g. which, what). Interrogative adverbs modify verbs, adjectives, or other adverbs in questions (e.g. how, where, when).
Example questions sentences (nouns in bold):What is your name?Would you like some tea?Are those new shoes?Have you seen this movie?What sport do you play?Where did the cat go?Why are you wearing that hat?Is Jack going to pick us up?What time is it?Does this answer your question?
Yes, they are. And they are three of the questions answered by adverbs. They can also be used as subordinating conjunctions, and much more rarely as nouns.
Prepositions typically answer questions about the relationship between nouns in a sentence, such as "where?", "when?", or "how?". They help provide more information about the position, direction, time, or manner of an action or object.
Abstract nouns are sometimes referred to as special nouns. Abstract nouns are words for things that can't be experienced by any of the five senses; they can't be seen, heard, smelled, tasted, or touched. Abstract nouns are words for things that are known, understood, believed, or felt emotionally.Examples of abstract nouns:singular / pluralability / abilitiescare / caresdesire / desiresemotion / emotionsfriendship / friendshipshope / hopesinclination / inclinationsjoy / joysmisery / miseriesneed / needsopinion / opinionspassion / passionsquestion / questions
The two nouns in your sentence are words and nouns, they are plural, common nouns.
Kinds of Nouns: singular and plural nouns common and proper nouns abstract and concrete nouns possessive nouns collective nouns compound nouns count and non-count (mass) nouns gerunds (verbal nouns) material nouns (words for things that other things are made from) attributive nouns (nouns functioning as adjectives)