This is the 2354th most frequent Chinese word.
光荣
Honor; glory.
In this sentence, the word 光荣 is used as a noun to describe an honorable state or achievement.
成为老师是一种光荣。
Being a teacher is an honor.
Here, 光荣 is functioning as an adjective describing a personal feeling of pride and honor due to an accomplishment.
他感到光荣，因为他的发明获得了认可。
He feels honored because his invention has been recognized.
In this example, 光荣 is used to modify the word mission (使命), attributing honor to the act of fulfilling one's responsibilities.