Archangel in Scripture generally infers a higher order of angel. Thus 1 Thessalonians 4:16 says "For the Lord himself shall come down from heaven with commandment, and with the voice of an archangel" which, when you think about it, is surely the wrong way round? What is an angel, even an archangel, compared to God?
In the Tradition, the named archangels are considered Seraphs, or one might say they are the officers in the highest choir of angel, but one might also say that there are archangels in every choir ...
Michael is patron and protector of the Church from the time of the Apostles, a Prince of the Seraphim. Gabriel also plays a significant part. Raphael says "I am the Angel Raphael, one of the seven who stand before the throne of God." (Tobit 12:15), so properly an archangel, although archangels are angels too, and Raphael doesn't like to make a fuss about the fact he's an archangel
Hey Renji, it's worse than that:
each angel is its own species!
Scripture has nothing to say about the fall of angels, Tradition nothing definitive. The Moslem Tradition holds that the angels fell over a dispute about the status of man, as God made Adam, and then told the angels they must serve him, at which point Satan said "Him? You are asking me, Satan, the brightest of the bright, etc., etc., to serve
that, a thing made of mud and spit, are you ... " at which point he experienced a new, sudden and somewhat uncomfortable sensation ... well, that's the way they tell it (embellished a bit by me ... )
God bless
Thomas
(PS, if I said the best selling clothing line for angels (apart from wing-warmers) is a white T with the message "Don't cross the Boss" ... would anyone believe me?)