Similarities

• They all (except for Buddhism) believe in one God.
• All of them have sacred writings that all tell stories and events from the past.
• All of them follow the teachings of a 'higher power'
• There is millions of them all across the globe
  

Differences

• They all have different practices in being welcomed into their religion.
• They all have different celebrations.
• Buddhism doesn’t worship the man who started Buddhism, but rather the things he taught.
• Islam follows five strict, but holy, rules.