What is/are the noun(s) in the following sentence?: The trash can is full.
A noun is defined as a person, place, or thing. In the sentence, "The trash can is full.", there are only two words that can qualify as nouns; "trash" and "can".
The tricky part is that "trash can" can be considered one word ("trashcan") or two words ("trash can"). Since the text shows the phrase as two separate words, I would consider there to be two nouns in the sentence.