This is the 4954th most frequent Japanese word.
秘訣
"秘訣" means "a secret (key) to success" or "a valuable tip."
Here, '秘訣' refers to the key to achieving a desired outcome, in this case, success.
成功の秘訣は努力と継続です。
The secret to success is effort and perseverance.
In this sentence, '秘訣' is used to describe a special practice or technique in cooking.
料理の秘訣を教えていただけますか?
Could you share the secret to cooking?
Here, '秘訣' indicates the essential factor that led to the success of the speech.