This is the 9th most frequent Korean word.
이라고
"이라고" is a Korean particle used to mean "called" or "is" when identifying or quoting a name or term.
'이라고' is utilized here to indicate what something is referred to as or called.
이것은 사과라고 불립니다.
This is called an apple.
'이라고' (in its shortened form used here as '거라고') is used indirectly quoting a statement or belief.
나는 미래가 밝을 거라고 믿어요.
I believe that the future will be bright.
'이라고' is used to quote or specify a designation or description assigned by someone.