This is the 4414th most frequent Korean word.
합성
"Synthesis" or "combination."
In this sentence, '합성' is used as a noun to mean 'composite' or 'synthesis', referring to the photo being a combination of elements.
합성 사진은 진짜처럼 보입니다.
The composite photo looks real.
Here, '합성' is used as a noun referring to the synthesis or combining process, especially in a scientific or chemical context.
이 화학 물질은 합성 과정에서 생성됩니다.
This chemical is produced during the synthesis process.
In this context, '합성' is used as part of the verb phrase, indicating the action of combining elements, specifically images in this case.