Common and Proper Nouns Exercises With Answers: Practice Guide

A common noun names any general person, place, thing, or idea (like city, teacher, or dog), while a proper noun names a specific one and is always capitalized (like Tokyo, Ms. Rivera, or Snoopy). This guide gives you ready-to-use common and proper nouns exercises with answers, so you can practice identifying, sorting, and capitalizing both types right away. Each exercise comes with a full answer key and a short explanation, so you can check your work and understand any mistakes instead of just memorizing answers.

Quick Practice Exercises

Start with these short mixed sets. Write your answers on paper, then check the “Answers and Explanations” section at the end. Each set exercises a different skill: spotting nouns, sorting them, and choosing the correct capitalization.

Set 1 — Identify the nouns. Underline every noun in each sentence, then label it C (common) or P (proper).

1. My sister visited Paris last summer.
2. The teacher handed out new books.
3. We drove to Lake Michigan on Friday.
4. A doctor works at the clinic.
5. Jordan plays soccer with his friends.

Set 2 — Sort the words. Place each word into the correct column: common or proper.

Words: river, Amazon, city, Boston, holiday, Thanksgiving, planet, Mars.

Set 3 — Choose the correct noun. Pick the word that fits the sentence and write it correctly.

1. We flew over the (ocean / Atlantic) on our trip.
2. My (aunt / Aunt) Maria bakes the best bread.
3. She reads the (newspaper / New York Times) every morning.
4. He adopted a (dog / Rover) from the shelter.

Set 4 — Correct or incorrect? Decide whether each sentence uses capitalization correctly. If it’s wrong, rewrite it.

1. We met professor Lee after class.
2. The Nile is the longest river in Africa.
3. My family celebrates thanksgiving in november.
4. She wants to visit the grand canyon.

Common vs Proper Nouns

The core difference is specificity and capitalization. A common noun names a general category and is not capitalized (unless it starts a sentence). A proper noun names one particular member of that category and is always capitalized. According to Merriam-Webster, a proper noun is “a noun that designates a particular being or thing” and is usually capitalized in English.

Notice the pattern: country works for any nation, but Japan points to exactly one. That’s the test to apply. If the word could refer to many things, it’s common; if it names a specific one, it’s proper.

Identification Exercise

Read each pair and circle the proper noun. Then write a short sentence using the common noun from the pair.

1. city / Chicago
2. river / Mississippi River
3. movie / Finding Nemo
4. holiday / Diwali
5. author / Maya Angelou

A few tricky cases are worth flagging. When a common noun is used as part of a title, it becomes proper: president is common, but President Lincoln is proper. Direction words follow the same logic — south is common, but the South as a named region is proper. Cambridge Dictionary notes that capitalization rules like these are one of the most reliable signals that a noun is proper.

Capitalization Practice

Now focus purely on capitalizing proper nouns correctly. The rule is simple: capitalize proper nouns, and leave common nouns lowercase unless they begin a sentence or appear in a title.

Exercise A — Fix the capitalization. Rewrite each sentence with correct capitalization.

1. my friend ana moved to chicago in march.
2. we studied spanish and french at lincoln high school.
3. the amazon river flows through brazil.
4. on monday, dr. patel visited st. mary’s hospital.
5. she read a book about the civil war.

Exercise B — Which words need capitals? List every word in each sentence that should be capitalized.

1. my brother flew to tokyo on a boeing 747.
2. the eiffel tower is in paris, france.
3. we celebrate new year’s day in january.
4. professor gomez teaches at yale university.

Exercise C — Worked example. Look at this sentence:

the statue of liberty stands in new york harbor.

Four words need capitals: The, Statue of Liberty, New, York. Everything else stays lowercase, because statue, of, harbor, and in are either common nouns or small connecting words. Apply the same reasoning — capital on the specific name — to every sentence you rewrite.

A useful habit: scan for capital letters first, because a missing capital on a recognized name is the most common error. Watch out for a special category too — brand names like Coca-Cola and Google are proper nouns and keep their capitals. Purdue Online Writing Lab offers a fuller breakdown of capitalization conventions if you want to check edge cases.

Answers and Explanations

Quick Practice — Set 1

1. sister ©, Paris (P)
2. teacher ©, books ©
3. Lake Michigan (P), Friday (P)
4. doctor ©, clinic ©
5. Jordan (P), soccer ©, friends ©

Explanation: Proper nouns name a specific one, so Paris, Lake Michigan, Friday, and Jordan are proper. Soccer stays common because it’s a general activity, not a named event.

Set 2 — Sorting

Common: river, city, holiday, planet Proper: Amazon, Boston, Thanksgiving, Mars

Set 3 — Choose

1. Atlantic
2. Aunt
3. New York Times
4. Rover

Explanation: Each answer names a specific thing — a particular ocean, relative (with title), newspaper, and dog.

Set 4 — Correct or incorrect?

1. Incorrect → We met Professor Lee after class.
2. Correct.
3. Incorrect → My family celebrates Thanksgiving in November.
4. Incorrect → She wants to visit the Grand Canyon.

Common vs Proper — Identification

1. Chicago
2. Mississippi River
3. Finding Nemo
4. Diwali
5. Maya Angelou

Capitalization — Exercise A

1. My friend Ana moved to Chicago in March.
2. We studied Spanish and French at Lincoln High School.
3. The Amazon River flows through Brazil.
4. On Monday, Dr. Patel visited St. Mary’s Hospital.
5. She read a book about the Civil War.

Exercise B

1. Tokyo (and Boeing as a brand name)
2. Eiffel Tower, Paris, France
3. New Year’s Day, January
4. Professor Gomez, Yale University

Explanation: In Exercise A, the first word of every sentence is capitalized regardless of type. The remaining capitals fall only on proper nouns. Words like of and the inside a name stay lowercase unless they start the sentence.

If you want to verify any single word’s status, checking a dictionary entry is the fastest route.

Key Takeaways

• A common noun names a general person, place, thing, or idea; a proper noun names a specific one and is always capitalized.
• The test is specificity: if a word points to exactly one thing, it’s proper.
• Capitalize proper nouns, first words of sentences, and titles — leave common nouns lowercase.
• The most frequent error is missing a capital on a recognized name, so scan for proper nouns first when proofreading.
• Work through the answer keys to spot patterns in your mistakes, then redo only the sets you missed.