View source for Apologies and thanks

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==Thank you==

*고마워.  
**고마워 is a low form of "Thank you." 고마워 is used among friends or to people who are younger than you. 
**and you can say "땡큐" among friends.
<br>
*감사해. {{incorrect}}
<br>
*고마워요.
**고마워요 is used among peers (like co-wokers...) or to junior or younger than you. 
:고마워요 looks like honorific form but it is close to low form. 
:so if you use 고마워요 to senior or to people who older than you, they'll feel bad.  
<br>
*감사해요.
**감사해요 is hardly used.
<br>
*고맙습니다. 감사합니다.
**고맙습니다 and 감사합니다 are honorific form of "Thank you". 고맙습니다 is pure korean, 감사합니다 is Chinese roots word.  
:Grammatically, 고맙습니다 and 감사합니다 are same level of honorific form. But many people consider that 감사합니다 is more honorific than 고맙습니다. 
**고맙습니다.
::to older than you 
::customer --> clerk
**감사합니다.
::to older than you
::clerk --> customer 
::grandchild --> grandfather 
::student --> teacher


==Sorry==

*미안해. 
**미안해 is a low form of "I'm sorry ." 미안해 is used among friends or to people who are younger than you. 
**and you can say "쏘리" among friends.
<br>
*죄송해. {{incorrect}}
<br>
*미안해요.
**미안해요 is used among peers (like co-wokers...) or to junior or younger than you. 
:미안해요 looks like honorific form but it is close to low form. 
:so if you use 미안해요 to senior or to people who older than you, they'll feel bad. 
<br>
*죄송해요.
:to older than you but close person 
:to close senior
:to close boss
<br>
*미안합니다.
:to stranger (but looks like younger than you. for example, middle age person --> young person) 
<br>
*죄송합니다. 
**very polite form
::clerk --> customer
::employee --> boss  
::to stranger (for example, when you bump into a person on the street)
::student --> teacher 

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