We know that nouns are parts of speech that are fundamental to learning English and, simply put, nouns are the names of things. Similarly, verbs are parts of speech that describe some action. Both nouns and verbs are essential to complete a sentence and they are so versatile that they assume many forms. In fact, it is almost always true that a sentence has to have both a verb and a noun in it in order to make sense.
As is fairly common in English, several words appear in different parts of speech and are not rigidly compartmentalised. In fact, we have already been exposed to several peculiar characteristics of English such as homophones and idioms and also words that are adjectives formed from nouns and compound nouns formed from various combinations of words. Verbs and nouns can also be confusing!