If the noun is proper, re-write the noun using correct capitalization. 2nd through 4th Grades. View PDF. Clown is a Noun (Poem) Students will underline all the common nouns and all the proper nouns in this poetry activity. They will also write their own noun poem. 2nd through 4th Grades. View PDF. Capitalization of Proper Nouns. Choose the correct noun in parenthesis to complete each sentence.