모든 vs 모두

What is the difference between 모든 vs 모두?

📘 The Difference Between 모두 and 모든

A common mistake among Korean learners is confusing 모두 and 모든.
Both relate to the idea of “all,” but their grammar roles are quite different.

1. 모두 [modu] = adverb / pronoun

 👉 Means “all (of them)”
👉 Can stand alone as the subject or adverb
👉 Often used with particles like -가, -를

✅ Grammar role:

• Adverb: modifies the verb

• Pronoun: replaces the noun (“everyone / everything”)

Examples:

1. 학생들이 모두 왔어요.
   → All the students came.

1. 우리는 케이크를 모두 먹었어요.
   → We ate all the cake.

1. 친구들이 모두가 그 영화를 좋아해요.
   → All of my friends like that movie.

1. 질문에 모두가 대답했어요.
   → Everyone answered the questions.

1. 선생님은 우리 모두를 사랑해요.
   → Our teacher loves all of us.

👉 Notice:

모두 = can replace the whole noun phrase
= everyone / everything / all of them so on

2. 모든 (modeun) = determiner

 👉 Means “every” / “all”
👉 Must always come before a noun
👉 Cannot be used alone

✅ Grammar role:

• Determiner → modifies a noun directly

Examples:

1. 모든 학생이 시험을 봤어요.
   → Every student took the exam.

1. 정현 씨는 모든 책을 다 읽었어요.
   → Junghyun read all the books.

1. 소현 씨의 모든 동물들이 너무 사랑스러워요.
   → All of Sohyun’s animals in Sohyun’s are so lovely.

1. 이 가게는 모든 음식을 직접 만들어요.
   → This restaurant makes all the food themselves.

1. Mel 씨는 모든 노래를 작곡했어요.
   → Mel wrote all the songs.

👉 Notice:

모든 + noun = one noun phrase
You cannot say just 모든 by itself.

3. Side-by-side comparison

Korean

Correct?

Why

Meaning

모두 왔어요

✅

모두 can stand alone

Everyone came

모든 왔어요

❌

모든 needs a noun

(incorrect)

모든 학생이 왔어요

✅

modifies 학생

All students came

학생이 모두 왔어요

✅

모두 modifies the verb

All students came

4. Natural English analogy

This may help learners understand intuitively:

• 모두 ≈ all / everyone / everything
  → like a pronoun or adverb

• 모든 + noun ≈ every + noun / all + noun

Examples:

• 모두 갔어요 = Everyone left

• 모든 사람이 갔어요 = Every person left

5. Common wrong examples

❌ 모든 먹었어요
→ incorrect because 모든 needs a noun

✅ 모두 먹었어요
→ Depending on the context, it can be

“I ate everything. / I ate it all.” or “Everyone ate. ”

❌ 모두 사람
→ incorrect

✅ 모든 사람
→ all people / everyone

✨ One-line summary

모두 = “all” by itself
모든 = “every/all” + noun