This is the 4937th most frequent Japanese word.
研
"研" means "to hone," "to sharpen," or "to study."
The word '研' (translated as 'research') is used as part of the word '研究', meaning 'research' or 'study', representing an organized and detailed examination of a subject.
私は科学を深く研究しています。
I am deeply researching science.
The word '研' (translated as 'polish') is used as part of the word '研磨', meaning 'polishing' or 'buffing', signifying the process of smoothing or refining a surface.
彼は研磨して輝きを出します。
He polishes to produce shine.
The word '研' (translated as 'training') is used as part of the word '研修', referring to training or study programs aimed at skill improvement or learning specialized knowledge.