In the Bible, the "morning star" is used to refer to both Jesus and Satan, but with different meanings and contexts. In Isaiah 14:12, Lucifer, a name meaning "light-bringer," is identified as the morning star. This verse, however, is not about the literal planet Venus, but rather a fallen angel, symbolizing pride and downfall. On the other hand, in Revelation 22:16, Jesus refers to himself as the "bright and morning star," representing his divine light, hope, and promise.
There are good “kings” and bad “kings.” Does that mean the good king is bad because he uses the same “word” to describe himself as a leader? You should Google this topic and study Christian responses to get a full picture. And not JWs!!!