Barakah: 

Literally means "blessings". It refers to the experiencing of abundance in things which are apparently insignificant or little, both in value and amount. 

Bid'ah: 

Literally means "innovation". In Islam it refers to introducing new things into religion which have no basis in the Quran or Sunnah, and in addition to this, to regard these new things as acts of ibaadah. A bid'ah is a major sin in Islam.