This is the 553rd most frequent Vietnamese word.
chứng
"Chứng" in Vietnamese can mean "certificate," "proof," or "symptom," depending on context.
In this context, "chứng" is used as part of "chứng nhận," which means "certification." It relates to an official document that confirms something.
Tôi đã nhận được giấy chứng nhận từ trường học.
I received a certificate from the school.
Here, "chứng" refers to a "syndrome" or "medical condition." It indicates a specific kind of illness or disorder.
Anh ấy có một chứng bệnh khó chữa.
He has a hard-to-cure illness.
In this sentence, "chứng" appears in "chứng cứ" (evidence) and "chứng minh" (to prove), relating to the concept of validating or confirming something.