Definition

외가 is a Korean word referring to one's family, however, it specifically refer's to one's mother's family. This can be seen with the prefix 외.

Definition

외동아이 is the Korean word referring to an only child. You can use it to describe yourself and others. It can also be appended with the words for son and daughter (i.e., 외동아들, 외동딸) to specify gender. 

Definition

외할머니 is the Korean term referring to one's maternal grandmother, or your mother's mother.

Definition

외할아버지 is the Korean term meaning grandfather, but it refers to your mother's father or maternal grandfather.

Definition

이다 is the Korean verb meaning "to be". It is used to link a subject with a predicate (also called a copula in Linguistics). Based on setting and speech register, you will it appear in numerous forms but the three most common are listed below:

• 이다 (dictionary form, very casual)
  
• 이에요 (generically formal, polite)
  
• 입니다 (humble form)

You will use 이에요for the vast majority of your communication in Korean.

Definition

있다 is a Korean verb which literally means to exist, although this often is used to show possession (i.e., to have something) though it technically doesn't take any direct objects-meaning you cannot quite use it like you would in English with the verb "to have". In any case, you will also see it appear in various forms based on speech register/level of politeness or humility. The three most common for survial purposes are:

• 있다 (dictionary form/very informal)
• 있어 (informal)
• 있어요 (formal, generic politeness)

You will likely use 있어요 for the vast majority of your communication in Korean.

Definition

자매 is the Korean word which means "sisters". 

Definition

자식 is the Korean word meaning sons and daughters or children, referring to one's own children.

Definition

작다 is the Korean adjective which means "to be small". You will commonly see and hear it as 작아 or 작아요.

Definition

작은아버지 is the Korean word referring to your uncle on your paternal side (i.e., your father's brother) however this term also means that the uncle is younger than your father, and married.