As a noun, turn can have a number of meanings:
1 an act of turning, example:
We took a right turn, which turned out to be the wrong way.
2 a bend or curve in a road, path, river, etc., example:
The trip took longer than expected because the road had many twists and turns.
3 a place where a road meets or branches off another; a turning, example:
Just follow this road until it takes a left turn.
4 a time when one period of time ends and another begins., example:
Agriculture was the leading employer at the turn of the 19th Century.
5 a development or change in circumstances, example:
His finances took a turn for the worse.
6 a short walk or ride, example:
We went for a turn around the park.
7 a brief feeling or experience of illness, example:
The frantic search took a funny turn when someone spotted Melissa's earring caught in her ponytail.
8 an opportunity or obligation to do something that comes successively to each of a number of people, example:
It was Joe's turn to kick the ball.
9 a short performance, especially one of a number given by different performers, example:
The program says that my turn comes right after Gene's magic act.
10 One round in a coil of rope or other material is called a turn.
"It is my turn at bat." Here, "turn" is used as a noun, it is the person's time at bat.
A noun is used as the subject of the object of a sentence or phrase.
The one noun in the sentence is bus.
A pronoun (he, she, it, him, her, we, us, etc.) can substitute for a noun in a sentence.
A noun clause and a noun phrase function as nouns in a sentence. A pronoun is a substitute for a noun.
A pronoun takes the place of a noun in a sentence and a gerund, a verbal noun, can be used for all of the functions of a noun as the subject of a sentence or clause and the object of a verb or a preposition.
Example sentences:As a noun: Take your turn.As a verb: Turn around.noun: Whose turn is it to cook?verb: At the end of the story the frog will turn into a prince.
Motivation is used a noun in the sentence.
Yes it is, because when used in a sentence, it is the subject of the sentence.
In a sentence the word psychopath would be used as a noun.
It is a noun and depending on how it is used it is a subject of a sentence.
it is used as a noun - i am full of awesomeness