Words are often used in different parts of speech. For instance "dance" can be a noun. They went to the dance.
But "dance" can also be a verb. They like to dance.
Because "dance" is commonly used as a noun or a verb, it may not be that confusing.
But there are some words that are commonly used as nouns, but can also be used as verb in rarer instances. Those are the words we focus on in this section because those are the words that often cause English Language Learners confusion.