can someone please show the informal, formal and higher way to say these words please! :

Hello
Thank you
Nice to meet you
Youre welcome

also if anyone can give me any more basic greeting words someones learning korean should know please show me how to also say those in informal, formal and higher language please and thank you!!

Question

can someone please show the informal, formal and higher way to say these words please! :

Hello
Thank you
Nice to meet you
Youre welcome

also if anyone can give me any more basic greeting words someones learning korean should know please show me how to also say those in informal, formal and higher language please and thank you!!

dabybsc · Answer

(Hello or Hi):
안녕 (informal)
[ ahn-nyeong ]
ㅎㅇ (하이) (Slang & Texting, informal / casual)
[ h ng/null (ha-yee) ]
안녕하세요 (formal / polite)
[ ahn-nyeong-ha("ah")-se-yo ]
안녕하십니까 (honorific / very polite)
[ ahn-nyeong-ha("ah")-seem-nee-kka ]
(Greeting)

(Goodbye):
안녕 (informal / casual)
[ ahn-nyeong ]
(Farewell)
When you stay / when someone leaves→ 잘 가 (informal / casual)
[ chal ga ]
When you leave / when someone stays→ 잘 있어 (informal / casual)
[ chal yees-sseo(ssuh) ]
잘 가(세)요 (informal polite & 세 => honorific)
[ chal ga(se)-yo ]
안녕히 계세요 (more formal) polite = 잘 있어
[ ahn-nyeong-hee("yee") gye-se-yo ]
안녕히 가세요 (more formal) polite = 잘 가
[ ahn-nyeong-hee("yee") ka-se-yo ]

(I love you):
(나는 너를)사랑해 (informal / casual)
[ (na-neun neo(nuh)-leul)sa-lang-ghae ]
(나는 너를)사랑한다 (formal non-polite)
[ (na-neun neo(nuh)-leul)sa-lang-han-da ]
(나는 당신을)사랑해요 (informal polite)
[ (na-neun dang-see-neul)sa-lang-ghae-yo ]
(나는 당신을)사랑합니다 (more formal) polite
[ (na-neun dang-see-neul)sa-lang-ham-nee-dah ]

(I'm sorry):
미안(해) (informal / casual)
[ mee-ah(nae) ]
죄송해요, 미안해요 (informal polite)
[ joe-song-ghae-yo, mee-ah-nae-yo ]
죄송합니다, 미안합니다 (more formal) polite
[ joe-song-ham-nee-dah, mee-ah-nam-nee-dah ]

(Thank you):
고마워요 (informal polite)
[ go-ma-wo-yo ]
감사합니다, 고맙습니다 (more formal) polite
[ kam-sa-ham-nee-dah, go-map-seum-nee-dah ]
땡큐, 고마워 (Speaking / Texting, informal)
[ thank you, go-ma-wo ]
ㄱㅅ, 감사 (Slang & Texting, informal)
[ ki-yeok see-ot, kam-sa ]

(You're welcome):
천만에요 is close to ‘never’, is proper in this example (below)
-너 A 좋아하지, 그렇지? You love A, don’t you?
-천만에, 나 이미 사랑하는 사람이 있어 Absolutely no, I already have a lady who I love.
천만에요 would be good, but NOT really used very often in everyday modern Korean. But it is an expression used only in textbooks.
[ cheon-ma-ne-yo ]
Speaking in Korea: 네~ [ ne~ ] (with a light smile) / 아니에요 [ ah-nee-eh-yo ] (don't mention it / no problem / it is nothing) / 아녜요 [ ah-nye-yo ]
별 말씀을요 [ pyeol mal-sseu-meul-yo ]
The above is formal / polite
아니야 [ ah-nee-ya ]
고맙긴 [ go-map-gin ]
뭘~ [ mwol~ ]
어~, 응~ [uh(eo)~, eung~ ]
The above is informal / casual
There is no word which is exactly equivalent to in Korean. Koreans respond in various ways to ‘thank you’ such as ‘네’, ‘뭘요’, ‘고맙긴요’ etc.

(Good morning):
Literally: 좋은 아침 but "안녕". (informal / casual)
[ cho-eun ah-cheem ] but [ ahn-nyeong ]
Literally: 좋은 아침이에요 / 입니다 but "안녕하세요". (formal / polite)
[ cho-eun ah-chee-mee-eh-yo / yeem-nee-dah ] but [ ahn-nyeong-ha("ah")-se-yo ]

(Good morning, afternoon, evening):
안녕하세요
[ ahn-nyeong-ha("ah")-se-yo ]

(Good night):
굿밤 (Slang & Texting, informal / casual)
[ good-bam ]
잘 자 (informal / casual)
[ chal ja ]
잘 자요 (informal polite)
[ chal ja-yo ]
안녕히 주무세요 (more formal) polite
[ ahn-nyeong-hee("yee") joo-moo-se-yo

dabybsc · Answer

(Nice to meet you):
(만나서)반가워 (informal / casual)
[ (man-na-seo(suh)ban-ga-wo ]
(만나서)반가워요 (informal polite)
[ (man-na-seo(suh)ban-ga-wo-yo ]
(만나서)반갑습니다 (more formal) polite
[ (man-na-seo(suh)ban-gap-seum-nee-dah ]

ginaaaa · Answer

1.Hello 
informal : 안녕  [an-nyeong]
formal=higher : 안녕하세요 [an-nyeong-ha-se-yo]

2. Thank you
informal : 고마워[go-ma-weo]
formal : 고마워요[go-ma-weo-yo]
higher: 감사합니다[gam-sa-hab-ni-da]

3. Nice to meet you
informal: 만나서 반가워
                [man-na-seo ban-ga-weo]
formal: 만나서 반가워요
              [man-na-seo ban-ga-weo-yo]
higher: 만나서 반갑습니다
             [man-na-seo ban-gab-seub-ni-da]

4. Youre welcome
informal : 천만에[cheon-man-e]
formal=higher :천만에요
                           [cheon-man-e-yo]
                           별 말씀을요.
                           [byeol mal-sseum-eul-yo]

(Nice to meet you):(만나서)반가워 (informal / casual)[ (man-na-seo(suh)ban-ga-wo ](만나서)반가워요 (informal polite)[ (man-na-seo(suh)ban-ga-wo-yo ](만나서)반갑습니다 (more formal) polite[ (man-na-seo(suh)ban-gap-seum-nee-dah ]

Ask native speakers questions for free

(Nice to meet you):
(만나서)반가워 (informal / casual)
[ (man-na-seo(suh)ban-ga-wo ]
(만나서)반가워요 (informal polite)
[ (man-na-seo(suh)ban-ga-wo-yo ]
(만나서)반갑습니다 (more formal) polite
[ (man-na-seo(suh)ban-gap-seum-nee-dah ]