This table shows the consonants and their various forms and romanizations. Look for patterns in how the letters are formed.
| Normal | Aspirated | Glottalized |
|---|---|---|
| ㄱ g/k | ㅋ k | ㄲ kk |
| ㄷ d/t | ㅌ t | ㄸ tt |
| ㅂ b/p | ㅍ p | ㅃ pp |
| ㅈ j | ㅊ ch | ㅉ jj |
| ㅅ s | ㅆ ss | |
| ㄴ n | ||
| ㄹ r/l | ||
| ㅁ m | ||
| ㅇ – / ng | ||
| ㅎ h |
Here is the pattern: The aspirated consonants have one extra horizontal line in them, and the glottalized ones are "doubled" versions of the normal consonant.
The row outlined in yellow is a new consonant that you haven't seen before.
Again, for pronunciation, the aspirated form is pronounced with an extra-heavy puff of air. The glottalized version is pronounced without any release of air, but with “tightness” in the throat.