Hangul
받침 — the closer
The letter under the vowel is not decoration. It closes the syllable.
밥 is ㅂ + ㅏ + ㅂ. The last ㅂ is 받침. It makes the 'p/b' stop at the end — the reason 밥 does not sound like 바.
Common closers: ㄱ/ㅋ/ㄲ often sound like a held k, ㄴ n, ㄷ/ㅅ/ㅈ/ㅊ often a held t, ㄹ l, ㅁ m, ㅂ/ㅍ a held p, ㅇ ng.
You will hear liaison later (한국말). First, finish the square. Do not skip the bottom letter because English doesn't have one.
Say these
밥
bap
rice / a meal
물
mul
water
돈
don
money
한국
hanguk
Korea
Check
The last letter in 밥 is
Type 'water' in Hangul.