Explanation

Adding the suffix “er” to a verb (teach) forms a noun meaning "one who performs the action."

So, teacher is a noun.

Explanation

"Board" refers to a group of people acting as one unit (e.g., board of directors), which makes it a collective noun.

Collective nouns describe a collection or group — not individuals separately.

Explanation

"All the kids" is a noun phrase because it functions as the subject of the sentence and contains a noun ("kids") with modifiers.

A noun phrase centers around a noun and may include determiners or adjectives.

Explanation

"Success" is an abstract noun because it refers to a concept or an idea, something that cannot be physically touched or seen.

Abstract nouns represent feelings, qualities, or states.

Voncrete nouns which refer to physical objects.

Explanation

"What he attempted" acts as the object of the verb "in" — it tells what he failed in.

Since it functions like a thing or idea, it's considered a Noun Phrase.

Explanation

An inanimate noun refers to non-living things, such as "table," "car," or "rock."

These nouns represent objects, places, or things that do not have life.

Explanation

A noun clause is a group of words that functions as a noun.

In this sentence, "What he did" acts as the subject of the sentence.

Explanation

"Ox" is an irregular noun because its plural form is "oxen", not "oxes."

The dish → dishes, chocolate → chocolates, plant → plants follow regular plural rules.

Explanation

"Determination" is a noun as it refers to a quality or state (the act of being determined).

It names an abstract concept, not an action or description.

Explanation

The words like team, forest, police, staff, people, audience, class etc. are called: Collective Noun.

Staff refers to a group of people working together, which makes it a collective noun.

It names a collection treated as a single unit.