This is the 7707th most frequent Korean word.
표현이다
"표현이다" means "to be an expression" or "is an expression."
Here, the word '표현이다' is used to indicate that the subject ('그 그림') is an embodiment or representation of an abstract concept, specifically 'love', highlighting its expressive nature.
그 그림은 사랑을 표현이다.
That painting is an expression of love.
In this sentence, '표현이다' conveys that the subject ('그의 말') serves as a representation or demonstration of the quality of honesty, emphasizing its descriptive aspect.
그의 말은 솔직함의 표현이다.
His words are an expression of honesty.
The word '표현이다' is applied here to articulate that the subject ('이 행동') acts as a manifestation of the emotion 'gratitude', underlying its role as a conveyor of feelings.